diff --git a/include/berry_crush.h b/include/berry_crush.h
index 8909ae821b..a08f1f6996 100755
--- a/include/berry_crush.h
+++ b/include/berry_crush.h
@@ -3,6 +3,6 @@
 
 #include "main.h"
 
-void sub_8020C70(MainCallback callback);
+void StartBerryCrush(MainCallback callback);
 
 #endif // GUARD_BERRY_CRUSH_H
diff --git a/include/cable_club.h b/include/cable_club.h
index c2849ca3eb..72e344009b 100644
--- a/include/cable_club.h
+++ b/include/cable_club.h
@@ -11,7 +11,7 @@
 
 void sub_80B37D4(TaskFunc taskFunc);
 u8 sub_80B3050(void);
-void sub_80B360C(void);
+void CB2_ReturnFromCableClubBattle(void);
 bool32 sub_80B2AF4(u16 *arg0, u16 *arg1);
 void sub_80B3AF8(u8 taskId);
 void task00_08081A90(u8 taskId);
diff --git a/include/constants/union_room.h b/include/constants/union_room.h
index 2314f85a09..9243ea15dc 100644
--- a/include/constants/union_room.h
+++ b/include/constants/union_room.h
@@ -1,6 +1,58 @@
 #ifndef GUARD_CONSTANTS_UNION_ROOM_H
 #define GUARD_CONSTANTS_UNION_ROOM_H
 
+#define UNION_ROOM_SPAWN_NONE 0
+#define UNION_ROOM_SPAWN_IN   1
+#define UNION_ROOM_SPAWN_OUT  2
+
+#define ACTIVITY_NONE               0
+#define ACTIVITY_BATTLE_SINGLE      1
+#define ACTIVITY_BATTLE_DOUBLE      2
+#define ACTIVITY_BATTLE_MULTI       3
+#define ACTIVITY_TRADE              4
+#define ACTIVITY_CHAT               5
+#define ACTIVITY_WONDER_CARD        6
+#define ACTIVITY_WONDER_NEWS        7
+#define ACTIVITY_CARD               8
+#define ACTIVITY_POKEMON_JUMP       9
+#define ACTIVITY_BERRY_CRUSH        10
+#define ACTIVITY_BERRY_PICK         11
+#define ACTIVITY_SEARCH             12
+#define ACTIVITY_SPIN_TRADE         13
+#define ACTIVITY_BATTLE_TOWER_OPEN  14
+#define ACTIVITY_RECORD_CORNER      15
+#define ACTIVITY_BERRY_BLENDER      16
+
+// Player response
+#define ACTIVITY_ACCEPT             17
+#define ACTIVITY_DECLINE            18
+
+#define ACTIVITY_NPCTALK            19
+#define ACTIVITY_PLYRTALK           20
+
+// Duplicate IDs?
+#define ACTIVITY_WONDER_CARD2       21
+#define ACTIVITY_WONDER_NEWS2       22
+
+#define ACTIVITY_CONTEST_COOL       23
+#define ACTIVITY_CONTEST_BEAUTY     24
+#define ACTIVITY_CONTEST_CUTE       25
+#define ACTIVITY_CONTEST_SMART      26
+#define ACTIVITY_CONTEST_TOUGH      27
+#define ACTIVITY_BATTLE_TOWER       28
+#define ACTIVITY_29                 29
+
+#define IN_UNION_ROOM   0x40
+
+// Used in UR_AddTextPrinterParameterized
+#define UR_COLOR_DKE_WHT_LTE 0
+#define UR_COLOR_RED_WHT_LTR 1
+#define UR_COLOR_GRN_WHT_LTG 2
+#define UR_COLOR_WHT_WHT_LTE 3
+#define UR_COLOR_WHT_DKE_LTE 4
+#define UR_COLOR_GRN_DN6_LTB 5
+#define UR_COLOR_DN5_DN6_LTB 6
+
 #define LINK_GROUP_SINGLE_BATTLE        0
 #define LINK_GROUP_DOUBLE_BATTLE        1
 #define LINK_GROUP_MULTI_BATTLE         2
@@ -10,8 +62,8 @@
 #define LINK_GROUP_BERRY_PICKING        6
 #define LINK_GROUP_WONDER_CARD          7
 #define LINK_GROUP_WONDER_NEWS          8
-#define LINK_GROUP_UNK_9                9
-#define LINK_GROUP_UNK_10               10
+#define LINK_GROUP_UNION_ROOM_RESUME    9
+#define LINK_GROUP_UNION_ROOM_INIT      10
 #define LINK_GROUP_UNK_11               11
 #define LINK_GROUP_RECORD_CORNER        12
 #define LINK_GROUP_BERRY_BLENDER        13
@@ -25,4 +77,8 @@
 #define LINK_GROUP_BATTLE_TOWER_OPEN    21
 #define NUM_LINK_GROUP_TYPES            22
 
+#define UR_TRADE_MATCH  0
+#define UR_TRADE_NOTYPE 1
+#define UR_TRADE_NOEGG  2
+
 #endif //GUARD_CONSTANTS_UNION_ROOM_H
diff --git a/include/dodrio_berry_picking.h b/include/dodrio_berry_picking.h
index 9995decc24..5decbeccb9 100644
--- a/include/dodrio_berry_picking.h
+++ b/include/dodrio_berry_picking.h
@@ -1,7 +1,7 @@
 #ifndef GUARD_DODRIO_BERRY_PICKING_H
 #define GUARD_DODRIO_BERRY_PICKING_H
 
-void sub_802493C(u16 a0, void (*callback)(void));
+void StartDodrioBerryPicking(u16 a0, void (*callback)(void));
 void IsDodrioInParty(void);
 void ShowDodrioBerryPickingRecords(void);
 
diff --git a/include/event_object_lock.h b/include/event_object_lock.h
index a3b350019d..0226eb632b 100644
--- a/include/event_object_lock.h
+++ b/include/event_object_lock.h
@@ -8,6 +8,6 @@ void LockSelectedObjectEvent(void);
 void sub_8098630(void);
 bool8 sub_8098734(void);
 void ScriptUnfreezeObjectEvents(void);
-void sub_8098524(void);
+void UnionRoom_UnlockPlayerAndChatPartner(void);
 
 #endif // GUARD_EVENT_OBJECT_LOCK_H
diff --git a/include/link.h b/include/link.h
index f41161d233..2818b3a7ce 100644
--- a/include/link.h
+++ b/include/link.h
@@ -274,7 +274,7 @@ void LoadWirelessStatusIndicatorSpriteGfx(void);
 bool8 IsLinkTaskFinished(void);
 void CreateWirelessStatusIndicatorSprite(u8, u8);
 void sub_800ADF8(void);
-void sub_800B488(void);
+void SetWirelessCommType1(void);
 void CheckShouldAdvanceLinkState(void);
 void sub_8011BD0(void);
 u8 IsLinkMaster(void);
diff --git a/include/link_rfu.h b/include/link_rfu.h
index 2d74e686ad..901b5deae1 100644
--- a/include/link_rfu.h
+++ b/include/link_rfu.h
@@ -204,7 +204,7 @@ extern u8 gWirelessStatusIndicatorSpriteId;
 // Exported ROM declarations
 void WipeTrainerNameRecords(void);
 void sub_800E700(void);
-void sub_800EDD4(void);
+void LinkRfu_Shutdown(void);
 void sub_800F6FC(u8 who);
 void sub_800F728(u8 who);
 bool32 IsSendingKeysToRfu(void);
@@ -225,51 +225,51 @@ void sub_800E174(void);
 void sub_800E6D0(void);
 bool32 sub_8010EC0(void);
 bool32 sub_8010F1C(void);
-bool32 sub_8011A80(void);
+bool32 RfuIsErrorStatus1or2(void);
 bool32 IsRfuRecvQueueEmpty(void);
 u32 GetRfuRecvQueueLength(void);
 void RfuVSync(void);
 void sub_80111B0(bool32 a0);
-u8 sub_8011A74(void);
-struct GFtgtGname *sub_800F7DC(void);
-void sub_8011068(u8 a0);
+u8 RfuGetErrorStatus(void);
+struct GFtgtGname *GetHostRFUtgtGname(void);
+void UpdateGameData_GroupLockedIn(u8 a0);
 void sub_8011170(u32 a0);
-void sub_8011A64(u8 a0, u16 a1);
+void RfuSetErrorStatus(u8 a0, u16 a1);
 u8 sub_801048C(bool32 a0);
-void sub_800DF90(struct GFtgtGname *buff1, u8 *buff2);
-void sub_8010F84(u8 a0, u32 a1, u32 a2);
-void sub_8011C10(u32 a0);
+void LinkRfu3_SetGnameUnameFromStaticBuffers(struct GFtgtGname *buff1, u8 *buff2);
+void SetHostRFUtgtGname(u8 a0, u32 a1, u32 a2);
+void InitializeRfuLinkManager_LinkLeader(u32 a0);
 bool32 sub_8012240(void);
-void sub_800EF38(void);
+void LinkRfu_StopManagerAndFinalizeSlots(void);
 bool32 sub_80105EC(void);
-bool32 sub_801064C(u16 a0, const u8 *a1);
-void sub_8010688(u8 a0, u16 a1, const u8 *a2);
-u32 sub_8010714(u16 a0, const u8 *a1);
-void sub_8011DC0(const u8 *a0, u16 a1);
-bool8 sub_800EF1C(void);
-bool32 sub_800EF58(bool32 a0);
+bool32 TrainerIdAndNameStillInPartnersList(u16 a0, const u8 *a1);
+void SendByteToPartnerByIdAndName(u8 a0, u16 a1, const u8 *a2);
+u32 WaitSendByteToPartnerByIdAndName(u16 a0, const u8 *a1);
+void RequestDisconnectSlotByTrainerNameAndId(const u8 *a0, u16 a1);
+bool8 LmanAcceptSlotFlagIsNotZero(void);
+bool32 WaitRfuState(bool32 a0);
 void DestroyWirelessStatusIndicatorSprite(void);
 void sub_801103C(void);
-void sub_8011C5C(void);
-void sub_80106D4(void);
+void InitializeRfuLinkManager_JoinGroup(void);
+void LinkRfuNIsend8(void);
 void RecordMixTrainerNames(void);
-void sub_800ED10(void);
-void sub_800ED28(void);
-void sub_8011090(u8 a0, u32 a1, u32 a2);
-void sub_8011FC8(const u8 *src, u16 trainerId);
-void sub_8010FA0(bool32 a0, bool32 a1);
-void sub_8010F60(void);
+void LinkRfu_CreateConnectionAsParent(void);
+void LinkRfu_StopManagerBeforeEnteringChat(void);
+void UpdateGameDataWithActivitySpriteGendersFlag(u8 a0, u32 a1, u32 a2);
+void CreateTask_RfuReconnectWithParent(const u8 *src, u16 trainerId);
+void SetGnameBufferWonderFlags(bool32 a0, bool32 a1);
+void ClearAndInitHostRFUtgtGname(void);
 void sub_8010FCC(u32 a0, u32 a1, u32 a2);
-void sub_8011C84(void);
+void InitializeRfuLinkManager_EnterUnionRoom(void);
 void sub_8012188(const u8 *name, struct GFtgtGname *structPtr, u8 a2);
-bool32 sub_8011B90(void);
+bool32 IsUnionRoomListenTaskActive(void);
 void sub_800FE50(void *a0);
-bool32 sub_800E540(u16 id, u8 *name);
+bool32 PlayerHasMetTrainerBefore(u16 id, u8 *name);
 void sub_8011DE0(u32 arg0);
 u8 sub_801100C(s32 a0);
 void sub_800EF7C(void);
-bool8 sub_800DE7C(struct GFtgtGname *buff1, u8 *buff2, u8 idx);
-bool8 sub_800DF34(struct GFtgtGname *buff1, u8 *buff2, u8 idx);
+bool8 LinkRfu_GetNameIfCompatible(struct GFtgtGname *buff1, u8 *buff2, u8 idx);
+bool8 LinkRfu_GetNameIfSerial7F7D(struct GFtgtGname *buff1, u8 *buff2, u8 idx);
 s32 sub_800E87C(u8 idx);
 void sub_8011BA4(void);
 void sub_8010198(void);
@@ -325,9 +325,6 @@ void PkmnStrToASCII(u8 *q1, const u8 *q2);
 void ASCIIToPkmnStr(u8 *q1, const u8 *q2);
 u8 sub_800DD1C(u8 maxFlags);
 void sub_800DD94(struct GFtgtGname *data, u8 r9, bool32 r2, s32 r3);
-bool8 sub_800DE7C(struct GFtgtGname *buff1, u8 *buff2, u8 idx);
-bool8 sub_800DF34(struct GFtgtGname *buff1, u8 *buff2, u8 idx);
-void sub_800DF90(struct GFtgtGname *buff1, u8 *buff2);
 void CreateWirelessStatusIndicatorSprite(u8 x, u8 y);
 void DestroyWirelessStatusIndicatorSprite(void);
 void LoadWirelessStatusIndicatorSpriteGfx(void);
@@ -337,7 +334,6 @@ void sub_800E174(void);
 void CopyTrainerRecord(struct TrainerNameRecord *dest, u32 trainerId, const u8 *name);
 bool32 NameIsNotEmpty(const u8 *name);
 void RecordMixTrainerNames(void);
-bool32 sub_800E540(u16 id, u8 *name);
 void WipeTrainerNameRecords(void);
 
 #endif //GUARD_LINK_RFU_H
diff --git a/include/menu.h b/include/menu.h
index d4a0389201..4a19f55b0f 100644
--- a/include/menu.h
+++ b/include/menu.h
@@ -79,7 +79,7 @@ void sub_8198DBC(u8 windowId, u8 fontId, u8 left, u8 top, u8 a4, u8 itemCount, u
 u8 sub_8199944(u8 windowId, u8 optionWidth, u8 columns, u8 rows, u8 initialCursorPos);
 u8 sub_8199134(s8, s8);
 u8 GetStartMenuWindowId(void);
-void sub_819A2BC(u8, u8);
+void ListMenuLoadStdPalAt(u8, u8);
 u8 Menu_MoveCursor(s8 cursorDelta);
 u8 Menu_MoveCursorNoWrapAround(s8 cursorDelta);
 void DrawStdWindowFrame(u8 windowId, bool8 CopyToVram);
diff --git a/include/mevent.h b/include/mevent.h
index a34ca355c9..8c0ebbad7c 100755
--- a/include/mevent.h
+++ b/include/mevent.h
@@ -57,7 +57,7 @@ u32 sub_801B708(const u16 *a0, const struct MEventStruct_Unk1442CC *a1, const vo
 bool32 MEventStruct_Unk1442CC_CompareField_unk_16(const struct MEventStruct_Unk1442CC *a0, const u16 *a1);
 u16 MEventStruct_Unk1442CC_GetValueNFrom_unk_20(const struct MEventStruct_Unk1442CC *a0, u32 command);
 u16 mevent_081445C0(u32 command);
-void sub_801B940(void);
-bool32 sub_801B94C(u16 a0);
+void ResetReceivedWonderCardFlag(void);
+bool32 MEventHandleReceivedWonderCard(u16 a0);
 
 #endif //GUARD_MEVENT_H
diff --git a/include/mystery_gift.h b/include/mystery_gift.h
index 243895a673..fb0414ee06 100644
--- a/include/mystery_gift.h
+++ b/include/mystery_gift.h
@@ -12,5 +12,7 @@ bool32 MG_PrintTextOnWindow1AndWaitButton(u8 *textState, const u8 *str);
 void AddTextPrinterToWindow1(const u8 *src);
 void c2_ereader(void);
 void c2_mystery_gift(void);
+void MG_DrawTextBorder(u8 windowId);
+s8 mevent_message_print_and_prompt_yes_no(u8 *textState, u16 *windowId, bool8 yesNoBoxPlacement, const u8 *str);
 
 #endif //GUARD_MYSTERY_GIFT_H
diff --git a/include/pokemon_jump.h b/include/pokemon_jump.h
index 9cf65212f2..91733b3853 100644
--- a/include/pokemon_jump.h
+++ b/include/pokemon_jump.h
@@ -3,7 +3,7 @@
 
 #include "main.h"
 
-void sub_802A9A8(u16 monId, MainCallback callback);
+void StartPokemonJump(u16 monId, MainCallback callback);
 bool32 IsSpeciesAllowedInPokemonJump(u16 species);
 void IsPokemonJumpSpeciesInParty(void);
 void ResetPokeJumpResults(void);
diff --git a/include/union_room.h b/include/union_room.h
index 4c4cb5a623..0f00753449 100644
--- a/include/union_room.h
+++ b/include/union_room.h
@@ -5,23 +5,23 @@
 
 // Exported type declarations
 
-struct UnkStruct_Shared
+struct WirelessGnameUnamePair
 {
-    struct GFtgtGname field_0;
+    struct GFtgtGname gname;
     u8 ALIGNED(4) playerName[PLAYER_NAME_LENGTH + 1];
 };
 
-struct UnkStruct_x1C
+struct UnkStruct_x1C // WirelessLink_Member?
 {
-    struct UnkStruct_Shared unk0;
-    u8 unk18:1;
+    struct WirelessGnameUnamePair gname_uname;
+    u8 active:1;
 };
 
-struct UnkStruct_x20
+struct UnkStruct_x20 // WirelessLink_Member?
 {
-    struct UnkStruct_Shared unk;
+    struct WirelessGnameUnamePair gname_uname;
     u16 field_18;
-    u8 field_1A_0:2;
+    u8 groupScheduledAnim:2;
     u8 field_1A_1:1;
     u8 field_1B;
     u8 field_1D;
@@ -44,29 +44,28 @@ struct UnkStruct_Main8
     struct UnkStruct_x20 arr[5];
 };
 
-struct UnkStruct_Leader
+struct WirelessLink_Leader
 {
     struct UnkStruct_Main0 *field_0;
     struct UnkStruct_Main4 *field_4;
     struct UnkStruct_Main8 *field_8;
     u8 state;
     u8 textState;
-    u8 field_E;
+    u8 delayTimerAfterOk;
     u8 listWindowId;
-    u8 field_10;
-    u8 field_11;
+    u8 bButtonCancelWindowId;
+    u8 nPlayerModeWindowId;
     u8 listTaskId;
-    u8 field_13;
-    u8 field_14;
-    u8 field_15;
+    u8 playerCount;
+    u16 field_14;
     u8 field_16;
-    u8 field_17;
-    u8 field_18;
+    u8 listenTaskId;
+    u8 activity;
     u8 field_19;
     u16 field_1A;
 };
 
-struct UnkStruct_Group
+struct WirelessLink_Group
 {
     struct UnkStruct_Main0 *field_0;
     struct UnkStruct_Main4 *field_4;
@@ -74,16 +73,16 @@ struct UnkStruct_Group
     u8 textState;
     u8 field_A;
     u8 listWindowId;
-    u8 field_C;
-    u8 field_D;
+    u8 bButtonCancelWindowId;
+    u8 playerNameAndIdWindowId;
     u8 listTaskId;
-    u8 field_F;
+    u8 leaderId;
     u8 field_10;
-    u8 field_11;
-    u8 field_12;
+    u8 listenTaskId;
+    u8 isWonderNews;
     u8 field_13;
-    u8 field_14;
-    u8 field_15;
+    u8 refreshTimer;
+    u8 delayBeforePrint;
 };
 
 struct UnkStruct_8019BA8
@@ -94,7 +93,7 @@ struct UnkStruct_8019BA8
     u8 field_3;
 };
 
-struct UnkStruct_URoom
+struct WirelessLink_URoom
 {
     struct UnkStruct_Main0 *field_0;
     struct UnkStruct_Main4 *field_4;
@@ -109,30 +108,30 @@ struct UnkStruct_URoom
     u8 field_18;
     u8 field_19;
     u8 field_1A;
-    u8 field_1B;
-    u8 field_1C;
-    u8 field_1D;
-    u8 field_1E;
+    u8 topListMenuWindowId;
+    u8 topListMenuId;
+    u8 tradeBoardSelectWindowId;
+    u8 tradeBoardDetailsWindowId;
     u8 field_1F;
     u8 field_20;
     u8 spriteIds[40];
     u8 field_49;
     u8 field_4A;
-    u16 field_4C[6];
-    u8 field_58[0x98 - 0x58];
-    u16 field_98;
-    u16 field_9A[3];
+    u16 playerSendBuffer[6];
+    u8 activityRequestStrbufs[4][16];
+    u16 partnerYesNoResponse;
+    u16 recvActivityRequest[3];
     struct UnkStruct_8019BA8 field_A0[8];
     u8 field_C0[12][15];
     u8 field_174[48];
     u8 field_1A4[200];
 };
 
-union UnkUnion_Main
+union WirelessLink_Main
 {
-    struct UnkStruct_Leader *leader;
-    struct UnkStruct_Group *group;
-    struct UnkStruct_URoom *uRoom;
+    struct WirelessLink_Leader *leader;
+    struct WirelessLink_Group *group;
+    struct WirelessLink_URoom *uRoom;
 };
 
 struct UnionRoomTrade
@@ -152,20 +151,22 @@ struct UnionRoomTrade
 
 // Exported RAM declarations
 
-extern u8 gUnknown_02022C2C;
-extern union UnkUnion_Main gUnknown_02022C30;
-extern struct GFtgtGnameSub gUnknown_02022C38;
+extern u8 gPlayerCurrActivity;
+extern union WirelessLink_Main gUnknown_02022C30;
+extern struct GFtgtGnameSub gPartnerTgtGnameSub;
 
 extern u16 gUnionRoomOfferedSpecies;
 extern u8 gUnionRoomRequestedMonType;
 
 // Exported ROM declarations
 
-u8 sub_8013F78(void);
+u8 CreateTask_ReturnFromLinkTrade(void);
 void nullsub_89(u8 taskId);
 void var_800D_set_xB(void);
 void MEvent_CreateTask_CardOrNewsWithFriend(u32 arg0);
 void MEvent_CreateTask_CardOrNewsOverWireless(u32 arg0);
 void MEvent_CreateTask_Leader(u32 arg0);
+u8 CreateTask_ListenToWireless(void);
+void StartUnionRoomBattle(u16 battleFlags);
 
 #endif //GUARD_UNION_ROOM_H
diff --git a/include/union_room_battle.h b/include/union_room_battle.h
index 2f50860085..ffccf197f3 100644
--- a/include/union_room_battle.h
+++ b/include/union_room_battle.h
@@ -1,7 +1,6 @@
 #ifndef GUARD_UNION_ROOM_BATTLE_H
 #define GUARD_UNION_ROOM_BATTLE_H
 
-u8 sub_8013C40(void);
-void sub_8014210(u16 battleFlags);
+void CB2_UnionRoomBattle(void);
 
 #endif //GUARD_UNION_ROOM_BATTLE_H
diff --git a/include/union_room_chat.h b/include/union_room_chat.h
index e7ca9d46ec..3dd22743a1 100755
--- a/include/union_room_chat.h
+++ b/include/union_room_chat.h
@@ -12,7 +12,7 @@ enum
 #define UNION_ROOM_KB_ROW_COUNT 10
 
 
-void sub_801DD98(void);
+void EnterUnionRoomChat(void);
 void copy_strings_to_sav1(void);
 
 #endif // GUARD_UNION_ROOM_CHAT_H
diff --git a/include/union_room_player_avatar.h b/include/union_room_player_avatar.h
index 9870d09811..698fc1693b 100644
--- a/include/union_room_player_avatar.h
+++ b/include/union_room_player_avatar.h
@@ -3,12 +3,12 @@
 
 u8 sub_8019BA8(struct UnkStruct_8019BA8 * ptr);
 void sub_8019E3C(void);
-void sub_8019E70(u8 *arg0, s32 arg1);
-void sub_8019F04(u8 *spriteIds);
+void CreateGroupMemberObjectsInvisible(u8 *arg0, s32 arg1);
+void DestroyGroupMemberObjects(u8 *spriteIds);
 void sub_8019F2C(void);
-void sub_801A274(struct UnkStruct_URoom *arg0);
-void sub_801A284(struct UnkStruct_URoom *arg0);
-bool32 sub_801A2A8(struct UnkStruct_Main0 *arg0, s16 *arg1, s16 *arg2, u8 *arg3);
-void sub_801A3D0(u32 arg0, u32 arg1, struct UnkStruct_Main0 *arg2);
+void ScheduleUnionRoomPlayerRefresh(struct WirelessLink_URoom *arg0);
+void HandleUnionRoomPlayerRefresh(struct WirelessLink_URoom *arg0);
+bool32 RfuUnionTool_GetGroupAndMemberInFrontOfPlayer(struct UnkStruct_Main0 *arg0, s16 *arg1, s16 *arg2, u8 *arg3);
+void UpdateUnionGroupMemberFacing(u32 arg0, u32 arg1, struct UnkStruct_Main0 *arg2);
 
 #endif //GUARD_UNION_ROOM_PLAYER_AVATAR_H
diff --git a/src/battle_controllers.c b/src/battle_controllers.c
index b411c12f67..43bd9fce60 100644
--- a/src/battle_controllers.c
+++ b/src/battle_controllers.c
@@ -33,7 +33,7 @@ void HandleLinkBattleSetup(void)
     if (gBattleTypeFlags & BATTLE_TYPE_LINK)
     {
         if (gWirelessCommType)
-            sub_800B488();
+            SetWirelessCommType1();
         if (!gReceivedRemoteLinkPlayers)
             OpenLink();
         CreateTask(task00_08081A90, 0);
diff --git a/src/berry_crush.c b/src/berry_crush.c
index 383d273c4f..3ff3156e6b 100755
--- a/src/berry_crush.c
+++ b/src/berry_crush.c
@@ -832,7 +832,7 @@ u32 sub_8020C0C(MainCallback callback)
     return 0;
 }
 
-void sub_8020C70(MainCallback callback)
+void StartBerryCrush(MainCallback callback)
 {
     u8 playerCount = 0;
     u8 multiplayerId;
diff --git a/src/cable_club.c b/src/cable_club.c
index c2ac728838..2a53c64b24 100644
--- a/src/cable_club.c
+++ b/src/cable_club.c
@@ -849,7 +849,7 @@ static void sub_80B32B4(u8 taskId)
         CleanupOverworldWindowsAndTilemaps();
         gTrainerBattleOpponent_A = 0x800;
         SetMainCallback2(CB2_InitBattle);
-        gMain.savedCallback = sub_80B360C;
+        gMain.savedCallback = CB2_ReturnFromCableClubBattle;
         DestroyTask(taskId);
         break;
     }
@@ -915,7 +915,7 @@ static void sub_80B33BC(u8 taskId)
         CleanupOverworldWindowsAndTilemaps();
         gTrainerBattleOpponent_A = 0x800;
         SetMainCallback2(CB2_InitBattle);
-        gMain.savedCallback = sub_80B360C;
+        gMain.savedCallback = CB2_ReturnFromCableClubBattle;
         DestroyTask(taskId);
         break;
     }
@@ -965,7 +965,7 @@ static void sub_80B3554(void)
     RunTasks();
 }
 
-void sub_80B360C(void)
+void CB2_ReturnFromCableClubBattle(void)
 {
     gBattleTypeFlags &= ~BATTLE_TYPE_20;
     Overworld_ResetMapMusic();
@@ -1129,7 +1129,7 @@ static void sub_80B3894(u8 taskId)
     case 3:
         if (IsLinkTaskFinished())
         {
-            sub_8013F78();
+            CreateTask_ReturnFromLinkTrade();
             DestroyTask(taskId);
         }
         break;
diff --git a/src/data/union_room.h b/src/data/union_room.h
index 8cb0bc8aa2..0433009126 100644
--- a/src/data/union_room.h
+++ b/src/data/union_room.h
@@ -50,27 +50,36 @@ const u8 sText_4PlayerMode[] = _("4-PLAYER\nMODE");
 const u8 sText_5PlayerMode[] = _("5-PLAYER\nMODE");
 
 static const u8 *const sPlayersNeededOrModeTexts[][5] = {
+    // 2 players required
     {
         sText_1PlayerNeeded,
         sText_2PlayerMode
-    }, {
+    }, 
+    // 4 players required
+    {
         sText_3PlayersNeeded,
         sText_2PlayersNeeded,
         sText_1PlayerNeeded,
         sText_4PlayerMode
-    }, {
+    }, 
+    // 2-5 players required
+    {
         sText_1PlayerNeeded,
         sText_2PlayerMode,
         sText_3PlayerMode,
         sText_4PlayerMode,
         sText_5PlayerMode
-    }, {
+    }, 
+    // 3-5 players required
+    {
         sText_2PlayersNeeded,
         sText_1PlayerNeeded,
         sText_3PlayerMode,
         sText_4PlayerMode,
         sText_5PlayerMode
-    }, {
+    }, 
+    // 2-4 players required
+    {
         sText_1PlayerNeeded,
         sText_2PlayerMode,
         sText_3PlayerMode,
@@ -484,8 +493,8 @@ static const u8 *const sChooseTrainerTexts[NUM_LINK_GROUP_TYPES] =
     [LINK_GROUP_BERRY_PICKING]     = sText_ChooseLeaderBerryPicking,
     [LINK_GROUP_WONDER_CARD]       = sText_ChooseTrainerToShareWonderCards,
     [LINK_GROUP_WONDER_NEWS]       = sText_ChooseTrainerToShareWonderNews,
-    [LINK_GROUP_UNK_9]             = NULL,
-    [LINK_GROUP_UNK_10]            = NULL,
+    [LINK_GROUP_UNION_ROOM_RESUME] = NULL,
+    [LINK_GROUP_UNION_ROOM_INIT]   = NULL,
     [LINK_GROUP_UNK_11]            = NULL,
     [LINK_GROUP_RECORD_CORNER]     = sText_ChooseLeaderRecordCorner,
     [LINK_GROUP_BERRY_BLENDER]     = sText_ChooseLeaderBerryBlender,
@@ -599,7 +608,7 @@ const u8 *const sLinkGroupActivityTexts[] = {
     sText_BattleTowerLv50
 };
 
-const struct WindowTemplate gUnknown_082F00BC = {
+static const struct WindowTemplate sWindowTemplate_BButtonCancel = {
     .bg = 0x00,
     .tilemapLeft = 0x00,
     .tilemapTop = 0x00,
@@ -609,29 +618,33 @@ const struct WindowTemplate gUnknown_082F00BC = {
     .baseBlock = 0x0008
 };
 
-const u32 gUnknown_082F00C4[NUM_LINK_GROUP_TYPES] = {
-    0x0201,
-    0x0202,
-    0x0403,
-    0x0204,
-    0x2509,
-    0x250a,
-    0x350b,
-    0x0000,
-    0x0000,
-    0x0000,
-    0x0000,
-    0x0000,
-    0x240f,
-    0x2410,
-    0x0000,
-    0x2417,
-    0x2418,
-    0x2419,
-    0x241a,
-    0x241b,
-    0x021c,
-    0x020e
+// Minimum and maximum number of players for a link group
+// A minimum of 0 means the min and max are equal
+#define LINK_GROUP_CAPACITY(min, max)(((min) << 12) | ((max) << 8))
+
+static const u32 sLinkGroupToActivityAndCapacity[NUM_LINK_GROUP_TYPES] = {
+    [LINK_GROUP_SINGLE_BATTLE]     = ACTIVITY_BATTLE_SINGLE     | LINK_GROUP_CAPACITY(0, 2),
+    [LINK_GROUP_DOUBLE_BATTLE]     = ACTIVITY_BATTLE_DOUBLE     | LINK_GROUP_CAPACITY(0, 2),
+    [LINK_GROUP_MULTI_BATTLE]      = ACTIVITY_BATTLE_MULTI      | LINK_GROUP_CAPACITY(0, 4),
+    [LINK_GROUP_TRADE]             = ACTIVITY_TRADE             | LINK_GROUP_CAPACITY(0, 2),
+    [LINK_GROUP_POKEMON_JUMP]      = ACTIVITY_POKEMON_JUMP      | LINK_GROUP_CAPACITY(2, 5),
+    [LINK_GROUP_BERRY_CRUSH]       = ACTIVITY_BERRY_CRUSH       | LINK_GROUP_CAPACITY(2, 5),
+    [LINK_GROUP_BERRY_PICKING]     = ACTIVITY_BERRY_PICK        | LINK_GROUP_CAPACITY(3, 5),
+    [LINK_GROUP_WONDER_CARD]       = ACTIVITY_NONE              | LINK_GROUP_CAPACITY(0, 0),
+    [LINK_GROUP_WONDER_NEWS]       = ACTIVITY_NONE              | LINK_GROUP_CAPACITY(0, 0),
+    [LINK_GROUP_UNION_ROOM_RESUME] = ACTIVITY_NONE              | LINK_GROUP_CAPACITY(0, 0),
+    [LINK_GROUP_UNION_ROOM_INIT]   = ACTIVITY_NONE              | LINK_GROUP_CAPACITY(0, 0),
+    [LINK_GROUP_UNK_11]            = ACTIVITY_NONE              | LINK_GROUP_CAPACITY(0, 0),
+    [LINK_GROUP_RECORD_CORNER]     = ACTIVITY_RECORD_CORNER     | LINK_GROUP_CAPACITY(2, 4),
+    [LINK_GROUP_BERRY_BLENDER]     = ACTIVITY_BERRY_BLENDER     | LINK_GROUP_CAPACITY(2, 4),
+    [LINK_GROUP_UNK_14]            = ACTIVITY_NONE              | LINK_GROUP_CAPACITY(0, 0),
+    [LINK_GROUP_COOL_CONTEST]      = ACTIVITY_CONTEST_COOL      | LINK_GROUP_CAPACITY(2, 4),
+    [LINK_GROUP_BEAUTY_CONTEST]    = ACTIVITY_CONTEST_BEAUTY    | LINK_GROUP_CAPACITY(2, 4),
+    [LINK_GROUP_CUTE_CONTEST]      = ACTIVITY_CONTEST_CUTE      | LINK_GROUP_CAPACITY(2, 4),
+    [LINK_GROUP_SMART_CONTEST]     = ACTIVITY_CONTEST_SMART     | LINK_GROUP_CAPACITY(2, 4),
+    [LINK_GROUP_TOUGH_CONTEST]     = ACTIVITY_CONTEST_TOUGH     | LINK_GROUP_CAPACITY(2, 4),
+    [LINK_GROUP_BATTLE_TOWER]      = ACTIVITY_BATTLE_TOWER      | LINK_GROUP_CAPACITY(0, 2),
+    [LINK_GROUP_BATTLE_TOWER_OPEN] = ACTIVITY_BATTLE_TOWER_OPEN | LINK_GROUP_CAPACITY(0, 2)
 };
 
 const struct WindowTemplate gUnknown_082F011C = {
@@ -654,7 +667,7 @@ const struct WindowTemplate gUnknown_082F0124 = {
     .baseBlock = 0x0044
 };
 
-const struct WindowTemplate gUnknown_082F012C = {
+static const struct WindowTemplate sWindowTemplate_NumPlayerMode = {
     .bg = 0x00,
     .tilemapLeft = 0x10,
     .tilemapTop = 0x03,
@@ -672,11 +685,11 @@ const struct ListMenuItem gUnknown_082F0134[] = {
     { sText_EmptyString, 4 }
 };
 
-const struct ListMenuTemplate gUnknown_082F015C = {
+static const struct ListMenuTemplate sListMenuTemplate_PossibleGroupMembers = {
     .items = gUnknown_082F0134,
     .moveCursorFunc = NULL,
-    .itemPrintFunc = sub_8013278,
-    .totalItems = 5,
+    .itemPrintFunc = ItemPrintFunc_PossibleGroupMembers,
+    .totalItems = ARRAY_COUNT(gUnknown_082F0134),
     .maxShowed = 5,
     .windowId = 0,
     .header_X = 0,
@@ -732,11 +745,11 @@ const struct ListMenuItem gUnknown_082F0184[] = {
     { sText_EmptyString, 15 }
 };
 
-const struct ListMenuTemplate gUnknown_082F0204 = {
+static const struct ListMenuTemplate sListMenuTemplate_UnionRoomGroups = {
     .items = gUnknown_082F0184,
     .moveCursorFunc = ListMenuDefaultCursorMoveFunc,
-    .itemPrintFunc = sub_8013DF4,
-    .totalItems = 16,
+    .itemPrintFunc = ListMenuItemPrintFunc_UnionRoomGroups,
+    .totalItems = ARRAY_COUNT(gUnknown_082F0184),
     .maxShowed = 5,
     .windowId = 0,
     .header_X = 0,
@@ -753,7 +766,7 @@ const struct ListMenuTemplate gUnknown_082F0204 = {
     .cursorKind = 0
 };
 
-const struct WindowTemplate gUnknown_082F021C = {
+static const struct WindowTemplate sWindowTemplate_InviteToActivity = {
     .bg = 0x00,
     .tilemapLeft = 0x14,
     .tilemapTop = 0x05,
@@ -770,11 +783,11 @@ const struct ListMenuItem gUnknown_082F0224[] = {
     { sText_Exit, 0x040 }
 };
 
-const struct ListMenuTemplate gUnknown_082F0244 = {
+static const struct ListMenuTemplate sListMenuTemplate_InviteToActivity = {
     .items = gUnknown_082F0224,
     .moveCursorFunc = ListMenuDefaultCursorMoveFunc,
     .itemPrintFunc = NULL,
-    .totalItems = 4,
+    .totalItems = ARRAY_COUNT(gUnknown_082F0224),
     .maxShowed = 4,
     .windowId = 0,
     .header_X = 0,
@@ -811,7 +824,7 @@ const struct ListMenuTemplate gUnknown_082F027C = {
     .items = gUnknown_082F0264,
     .moveCursorFunc = ListMenuDefaultCursorMoveFunc,
     .itemPrintFunc = NULL,
-    .totalItems = 3,
+    .totalItems = ARRAY_COUNT(gUnknown_082F0264),
     .maxShowed = 3,
     .windowId = 0,
     .header_X = 0,
@@ -838,7 +851,7 @@ const struct WindowTemplate gUnknown_082F0294 = {
     .baseBlock = 0x0001
 };
 
-static const struct ListMenuItem sTradingBoardTypes[] = {
+static const struct ListMenuItem sTradingBoardTypes[NUMBER_OF_MON_TYPES] = {
     { gTypeNames[TYPE_NORMAL],   TYPE_NORMAL         },
     { gTypeNames[TYPE_FIRE],     TYPE_FIRE           },
     { gTypeNames[TYPE_WATER],    TYPE_WATER          },
@@ -856,14 +869,14 @@ static const struct ListMenuItem sTradingBoardTypes[] = {
     { gTypeNames[TYPE_DRAGON],   TYPE_DRAGON         },
     { gTypeNames[TYPE_STEEL],    TYPE_STEEL          },
     { gTypeNames[TYPE_DARK],     TYPE_DARK           },
-    { sText_Exit,         NUMBER_OF_MON_TYPES }
+    { sText_Exit,                NUMBER_OF_MON_TYPES }
 };
 
 const struct ListMenuTemplate sMenuTemplate_TradingBoardRequestType = {
     .items = sTradingBoardTypes,
     .moveCursorFunc = ListMenuDefaultCursorMoveFunc,
     .itemPrintFunc = NULL,
-    .totalItems = NUMBER_OF_MON_TYPES,
+    .totalItems = ARRAY_COUNT(sTradingBoardTypes),
     .maxShowed = 6,
     .windowId = 0,
     .header_X = 0,
@@ -900,7 +913,7 @@ const struct WindowTemplate gUnknown_082F034C = {
     .baseBlock = 0x0039
 };
 
-const struct ListMenuItem gUnknown_082F0354[] = {
+static const struct ListMenuItem sTradeBoardListMenuItems[] = {
     { sText_EmptyString, -3 },
     { sText_EmptyString,  0 },
     { sText_EmptyString,  1 },
@@ -913,11 +926,11 @@ const struct ListMenuItem gUnknown_082F0354[] = {
     { sText_Exit2,  8 }
 };
 
-const struct ListMenuTemplate gUnknown_082F03A4 = {
-    .items = gUnknown_082F0354,
+static const struct ListMenuTemplate sTradeBoardListMenuTemplate = {
+    .items = sTradeBoardListMenuItems,
     .moveCursorFunc = ListMenuDefaultCursorMoveFunc,
-    .itemPrintFunc = sub_8017BE8,
-    .totalItems = 10,
+    .itemPrintFunc = TradeBoardListMenuItemPrintFunc,
+    .totalItems = ARRAY_COUNT(sTradeBoardListMenuItems),
     .maxShowed = 6,
     .windowId = 0,
     .header_X = 0,
@@ -944,7 +957,7 @@ const struct WindowTemplate UnrefWindowTemplate_082F03B4 = {
     .baseBlock = 0x0039
 };
 
-const struct ListMenuItem gUnknown_082F03C4[] = {
+static const struct ListMenuItem sEmptyListMenuItems[] = {
     { sText_EmptyString,  0 },
     { sText_EmptyString,  1 },
     { sText_EmptyString,  2 },
@@ -963,11 +976,12 @@ const struct ListMenuItem gUnknown_082F03C4[] = {
     { sText_EmptyString, 15 }
 };
 
-const struct ListMenuTemplate UnrefListMenuTemplate_082F0444 = {
-    .items = gUnknown_082F03C4,
+// Unused
+static const struct ListMenuTemplate sUnknownListMenuTemplate = {
+    .items = sEmptyListMenuItems,
     .moveCursorFunc = ListMenuDefaultCursorMoveFunc,
     .itemPrintFunc = nullsub_14,
-    .totalItems = 16,
+    .totalItems = ARRAY_COUNT(sEmptyListMenuItems),
     .maxShowed = 4,
     .windowId = 0,
     .header_X = 0,
@@ -984,78 +998,100 @@ const struct ListMenuTemplate UnrefListMenuTemplate_082F0444 = {
     .cursorKind = 0
 };
 
-const struct UnkStruct_Shared gUnknown_082F045C = {0};
+const struct WirelessGnameUnamePair sWirelessGnameUnamePair_Dummy = {0};
 
-ALIGNED(4) const u8 gUnknown_082F0474[] = {0x01, 0xff};
-ALIGNED(4) const u8 gUnknown_082F0478[] = {0x02, 0xff};
-ALIGNED(4) const u8 gUnknown_082F047C[] = {0x03, 0xff};
-ALIGNED(4) const u8 gUnknown_082F0480[] = {0x04, 0xff};
-ALIGNED(4) const u8 gUnknown_082F0484[] = {0x09, 0xff};
-ALIGNED(4) const u8 gUnknown_082F0488[] = {0x0a, 0xff};
-ALIGNED(4) const u8 gUnknown_082F048C[] = {0x0b, 0xff};
-ALIGNED(4) const u8 gUnknown_082F0490[] = {0x15, 0xff};
-ALIGNED(4) const u8 gUnknown_082F0494[] = {0x16, 0xff};
-ALIGNED(4) const u8 gUnknown_082F0498[] = {0x40, 0x41, 0x44, 0x45, 0x48, 0x51, 0x52, 0x53, 0x54, 0xff};
-ALIGNED(4) const u8 gUnknown_082F04A4[] = {0x0c, 0xff};
-ALIGNED(4) const u8 gUnknown_082F04A8[] = {0x01, 0x02, 0x03, 0x04, 0x09, 0x0a, 0x0b, 0x15, 0x16, 0x0d, 0xff};
-ALIGNED(4) const u8 gUnknown_082F04B4[] = {0x0f, 0xff};
-ALIGNED(4) const u8 gUnknown_082F04B8[] = {0x10, 0xff};
-ALIGNED(4) const u8 gUnknown_082F04BC[] = {0x17, 0xff};
-ALIGNED(4) const u8 gUnknown_082F04C0[] = {0x18, 0xff};
-ALIGNED(4) const u8 gUnknown_082F04C4[] = {0x19, 0xff};
-ALIGNED(4) const u8 gUnknown_082F04C8[] = {0x1a, 0xff};
-ALIGNED(4) const u8 gUnknown_082F04CC[] = {0x1b, 0xff};
-ALIGNED(4) const u8 gUnknown_082F04D0[] = {0x1c, 0xff};
-ALIGNED(4) const u8 gUnknown_082F04D4[] = {0x0e, 0xff};
+ALIGNED(4) const u8 sAcceptedActivityIds_SingleBattle[]    = {ACTIVITY_BATTLE_SINGLE, 0xff};
+ALIGNED(4) const u8 sAcceptedActivityIds_DoubleBattle[]    = {ACTIVITY_BATTLE_DOUBLE, 0xff};
+ALIGNED(4) const u8 sAcceptedActivityIds_MultiBattle[]     = {ACTIVITY_BATTLE_MULTI, 0xff};
+ALIGNED(4) const u8 sAcceptedActivityIds_Trade[]           = {ACTIVITY_TRADE, 0xff};
+ALIGNED(4) const u8 sAcceptedActivityIds_PokemonJump[]     = {ACTIVITY_POKEMON_JUMP, 0xff};
+ALIGNED(4) const u8 sAcceptedActivityIds_BerryCrush[]      = {ACTIVITY_BERRY_CRUSH, 0xff};
+ALIGNED(4) const u8 sAcceptedActivityIds_BerryPicking[]    = {ACTIVITY_BERRY_PICK, 0xff};
+ALIGNED(4) const u8 sAcceptedActivityIds_WonderCard[]      = {ACTIVITY_WONDER_CARD2, 0xff};
+ALIGNED(4) const u8 sAcceptedActivityIds_WonderNews[]      = {ACTIVITY_WONDER_NEWS2, 0xff};
+ALIGNED(4) const u8 sAcceptedActivityIds_Resume[]          = {
+    IN_UNION_ROOM | ACTIVITY_NONE, 
+    IN_UNION_ROOM | ACTIVITY_BATTLE_SINGLE, 
+    IN_UNION_ROOM | ACTIVITY_TRADE, 
+    IN_UNION_ROOM | ACTIVITY_CHAT, 
+    IN_UNION_ROOM | ACTIVITY_CARD, 
+    IN_UNION_ROOM | ACTIVITY_ACCEPT, 
+    IN_UNION_ROOM | ACTIVITY_DECLINE, 
+    IN_UNION_ROOM | ACTIVITY_NPCTALK, 
+    IN_UNION_ROOM | ACTIVITY_PLYRTALK, 
+    0xff
+};
+ALIGNED(4) const u8 sAcceptedActivityIds_Init[]            = {ACTIVITY_SEARCH, 0xff};
+ALIGNED(4) const u8 sAcceptedActivityIds_Unk11[]           = {
+    ACTIVITY_BATTLE_SINGLE, 
+    ACTIVITY_BATTLE_DOUBLE, 
+    ACTIVITY_BATTLE_MULTI, 
+    ACTIVITY_TRADE, 
+    ACTIVITY_POKEMON_JUMP, 
+    ACTIVITY_BERRY_CRUSH, 
+    ACTIVITY_BERRY_PICK, 
+    ACTIVITY_WONDER_CARD2, 
+    ACTIVITY_WONDER_NEWS2, 
+    ACTIVITY_SPIN_TRADE, 
+    0xff
+};
+ALIGNED(4) const u8 sAcceptedActivityIds_RecordCorner[]    = {ACTIVITY_RECORD_CORNER, 0xff};
+ALIGNED(4) const u8 sAcceptedActivityIds_BerryBlender[]    = {ACTIVITY_BERRY_BLENDER, 0xff};
+ALIGNED(4) const u8 sAcceptedActivityIds_CoolContest[]     = {ACTIVITY_CONTEST_COOL, 0xff};
+ALIGNED(4) const u8 sAcceptedActivityIds_BeautyContest[]   = {ACTIVITY_CONTEST_BEAUTY, 0xff};
+ALIGNED(4) const u8 sAcceptedActivityIds_CuteContest[]     = {ACTIVITY_CONTEST_CUTE, 0xff};
+ALIGNED(4) const u8 sAcceptedActivityIds_SmartContest[]    = {ACTIVITY_CONTEST_SMART, 0xff};
+ALIGNED(4) const u8 sAcceptedActivityIds_ToughContest[]    = {ACTIVITY_CONTEST_TOUGH, 0xff};
+ALIGNED(4) const u8 sAcceptedActivityIds_BattleTower[]     = {ACTIVITY_BATTLE_TOWER, 0xff};
+ALIGNED(4) const u8 sAcceptedActivityIds_BattleTowerOpen[] = {ACTIVITY_BATTLE_TOWER_OPEN, 0xff};
 
-const u8 *const gUnknown_082F04D8[NUM_LINK_GROUP_TYPES] = {
-    gUnknown_082F0474,
-    gUnknown_082F0478,
-    gUnknown_082F047C,
-    gUnknown_082F0480,
-    gUnknown_082F0484,
-    gUnknown_082F0488,
-    gUnknown_082F048C,
-    gUnknown_082F0490,
-    gUnknown_082F0494,
-    gUnknown_082F0498,
-    gUnknown_082F04A4,
-    gUnknown_082F04A8,
-    gUnknown_082F04B4,
-    gUnknown_082F04B8,
-    NULL,
-    gUnknown_082F04BC,
-    gUnknown_082F04C0,
-    gUnknown_082F04C4,
-    gUnknown_082F04C8,
-    gUnknown_082F04CC,
-    gUnknown_082F04D0,
-    gUnknown_082F04D4
+const u8 *const sAcceptedActivityIds[NUM_LINK_GROUP_TYPES] = {
+    [LINK_GROUP_SINGLE_BATTLE]     = sAcceptedActivityIds_SingleBattle,
+    [LINK_GROUP_DOUBLE_BATTLE]     = sAcceptedActivityIds_DoubleBattle,
+    [LINK_GROUP_MULTI_BATTLE]      = sAcceptedActivityIds_MultiBattle,
+    [LINK_GROUP_TRADE]             = sAcceptedActivityIds_Trade,
+    [LINK_GROUP_POKEMON_JUMP]      = sAcceptedActivityIds_PokemonJump,
+    [LINK_GROUP_BERRY_CRUSH]       = sAcceptedActivityIds_BerryCrush,
+    [LINK_GROUP_BERRY_PICKING]     = sAcceptedActivityIds_BerryPicking,
+    [LINK_GROUP_WONDER_CARD]       = sAcceptedActivityIds_WonderCard,
+    [LINK_GROUP_WONDER_NEWS]       = sAcceptedActivityIds_WonderNews,
+    [LINK_GROUP_UNION_ROOM_RESUME] = sAcceptedActivityIds_Resume,
+    [LINK_GROUP_UNION_ROOM_INIT]   = sAcceptedActivityIds_Init,
+    [LINK_GROUP_UNK_11]            = sAcceptedActivityIds_Unk11,
+    [LINK_GROUP_RECORD_CORNER]     = sAcceptedActivityIds_RecordCorner,
+    [LINK_GROUP_BERRY_BLENDER]     = sAcceptedActivityIds_BerryBlender,
+    [LINK_GROUP_UNK_14]            = NULL,
+    [LINK_GROUP_COOL_CONTEST]      = sAcceptedActivityIds_CoolContest,
+    [LINK_GROUP_BEAUTY_CONTEST]    = sAcceptedActivityIds_BeautyContest,
+    [LINK_GROUP_CUTE_CONTEST]      = sAcceptedActivityIds_CuteContest,
+    [LINK_GROUP_SMART_CONTEST]     = sAcceptedActivityIds_SmartContest,
+    [LINK_GROUP_TOUGH_CONTEST]     = sAcceptedActivityIds_ToughContest,
+    [LINK_GROUP_BATTLE_TOWER]      = sAcceptedActivityIds_BattleTower,
+    [LINK_GROUP_BATTLE_TOWER_OPEN] = sAcceptedActivityIds_BattleTowerOpen
 };
 
-// Link group type to ID for gUnknown_02022C2C
-const u8 gUnknown_082F0530[NUM_LINK_GROUP_TYPES + 2] = 
+static const u8 sLinkGroupToURoomActivity[NUM_LINK_GROUP_TYPES + 2] = 
 {
-    0x01, 
-    0x02, 
-    0x03, 
-    0x04, 
-    0x09, 
-    0x0a, 
-    0x0b, 
-    0x15,
-    0x16, 
-    0x00, 
-    0x00, 
-    0x00, 
-    0x0f, 
-    0x10, 
-    0x00, 
-    0x17,
-    0x18, 
-    0x19, 
-    0x1a, 
-    0x1b, 
-    0x1c, 
-    0x0e
+    [LINK_GROUP_SINGLE_BATTLE]     = ACTIVITY_BATTLE_SINGLE, 
+    [LINK_GROUP_DOUBLE_BATTLE]     = ACTIVITY_BATTLE_DOUBLE, 
+    [LINK_GROUP_MULTI_BATTLE]      = ACTIVITY_BATTLE_MULTI, 
+    [LINK_GROUP_TRADE]             = ACTIVITY_TRADE, 
+    [LINK_GROUP_POKEMON_JUMP]      = ACTIVITY_POKEMON_JUMP, 
+    [LINK_GROUP_BERRY_CRUSH]       = ACTIVITY_BERRY_CRUSH, 
+    [LINK_GROUP_BERRY_PICKING]     = ACTIVITY_BERRY_PICK, 
+    [LINK_GROUP_WONDER_CARD]       = ACTIVITY_WONDER_CARD2,
+    [LINK_GROUP_WONDER_NEWS]       = ACTIVITY_WONDER_NEWS2, 
+    [LINK_GROUP_UNION_ROOM_RESUME] = ACTIVITY_NONE, 
+    [LINK_GROUP_UNION_ROOM_INIT]   = ACTIVITY_NONE, 
+    [LINK_GROUP_UNK_11]            = ACTIVITY_NONE, 
+    [LINK_GROUP_RECORD_CORNER]     = ACTIVITY_RECORD_CORNER, 
+    [LINK_GROUP_BERRY_BLENDER]     = ACTIVITY_BERRY_BLENDER, 
+    [LINK_GROUP_UNK_14]            = ACTIVITY_NONE, 
+    [LINK_GROUP_COOL_CONTEST]      = ACTIVITY_CONTEST_COOL,
+    [LINK_GROUP_BEAUTY_CONTEST]    = ACTIVITY_CONTEST_BEAUTY, 
+    [LINK_GROUP_CUTE_CONTEST]      = ACTIVITY_CONTEST_CUTE, 
+    [LINK_GROUP_SMART_CONTEST]     = ACTIVITY_CONTEST_SMART, 
+    [LINK_GROUP_TOUGH_CONTEST]     = ACTIVITY_CONTEST_TOUGH, 
+    [LINK_GROUP_BATTLE_TOWER]      = ACTIVITY_BATTLE_TOWER, 
+    [LINK_GROUP_BATTLE_TOWER_OPEN] = ACTIVITY_BATTLE_TOWER_OPEN
 };
diff --git a/src/dodrio_berry_picking.c b/src/dodrio_berry_picking.c
index 936c1828fc..1eaedfd64d 100644
--- a/src/dodrio_berry_picking.c
+++ b/src/dodrio_berry_picking.c
@@ -450,7 +450,7 @@ static void (*const gUnknown_082F7AF4[])(void) =
 };
 
 // code
-void sub_802493C(u16 a0, void (*callback)(void))
+void StartDodrioBerryPicking(u16 a0, void (*callback)(void))
 {
     gUnknown_03000DB0 = FALSE;
 
diff --git a/src/event_object_lock.c b/src/event_object_lock.c
index b728f7774a..67652a99b3 100644
--- a/src/event_object_lock.c
+++ b/src/event_object_lock.c
@@ -96,7 +96,7 @@ void ScriptUnfreezeObjectEvents(void)
     UnfreezeObjectEvents();
 }
 
-void sub_8098524(void)
+void UnionRoom_UnlockPlayerAndChatPartner(void)
 {
     u8 playerObjectId;
 
diff --git a/src/item_menu.c b/src/item_menu.c
index fe381516c2..274b92147f 100755
--- a/src/item_menu.c
+++ b/src/item_menu.c
@@ -2290,7 +2290,7 @@ void SetupBagMenu_Textboxes(void)
     DeactivateAllTextPrinters();
     LoadUserWindowBorderGfx(0, 1, 0xE0);
     LoadMessageBoxGfx(0, 10, 0xD0);
-    sub_819A2BC(0xC0, 1);
+    ListMenuLoadStdPalAt(0xC0, 1);
     LoadPalette(&gUnknown_0860F074, 0xF0, 0x20);
     for (i = 0; i < 3; i++)
     {
diff --git a/src/link.c b/src/link.c
index 34c9ee7ef5..abd9715dda 100644
--- a/src/link.c
+++ b/src/link.c
@@ -221,7 +221,7 @@ static const u8 sUnused_082ED224[] = {0x00, 0xff, 0xfe, 0xff, 0x00};
 
 bool8 IsWirelessAdapterConnected(void)
 {
-    sub_800B488();
+    SetWirelessCommType1();
     sub_800E700();
     if (rfu_LMAN_REQBN_softReset_and_checkID() == 0x8001)
     {
@@ -389,7 +389,7 @@ void CloseLink(void)
     gReceivedRemoteLinkPlayers = FALSE;
     if (gWirelessCommType)
     {
-        sub_800EDD4();
+        LinkRfu_Shutdown();
     }
     gLinkOpen = FALSE;
     DisableSerial();
@@ -1860,7 +1860,7 @@ bool8 HandleLinkConnection(void)
     return FALSE;
 }
 
-void sub_800B488(void)
+void SetWirelessCommType1(void)
 {
     if (gReceivedRemoteLinkPlayers == 0)
     {
diff --git a/src/link_rfu_2.c b/src/link_rfu_2.c
index 3ee193ec64..e13e0d4e1a 100644
--- a/src/link_rfu_2.c
+++ b/src/link_rfu_2.c
@@ -375,11 +375,11 @@ void sub_800EAFC(void)
 
 void sub_800EB44(u8 taskId)
 {
-    if (sub_800F7DC()->activity == 0x54 && sub_8011A74() == 4)
+    if (GetHostRFUtgtGname()->activity == 0x54 && RfuGetErrorStatus() == 4)
     {
         rfu_REQ_disconnect(lman.acceptSlot_flag);
         rfu_waitREQComplete();
-        sub_8011A64(0, 0);
+        RfuSetErrorStatus(0, 0);
     }
     switch (Rfu.unk_04)
     {
@@ -421,7 +421,7 @@ void sub_800EB44(u8 taskId)
         case 16:
             Rfu.unk_cdb = 0;
             rfu_LMAN_setMSCCallback(sub_800EDBC);
-            sub_8011068(1);
+            UpdateGameData_GroupLockedIn(TRUE);
             sub_800EAB4();
             sub_800EAFC();
             Rfu.unk_04 = 20;
@@ -434,12 +434,12 @@ void sub_800EB44(u8 taskId)
     }
 }
 
-void sub_800ED10(void)
+void LinkRfu_CreateConnectionAsParent(void)
 {
     rfu_LMAN_establishConnection(1, 0, 240, (u16 *)gUnknown_082ED6E0);
 }
 
-void sub_800ED28(void)
+void LinkRfu_StopManagerBeforeEnteringChat(void)
 {
     rfu_LMAN_stopManager(FALSE);
 }
@@ -471,7 +471,7 @@ void sub_800EDBC(u16 unused)
     Rfu.unk_cdb = 1;
 }
 
-void sub_800EDD4(void)
+void LinkRfu_Shutdown(void)
 {
     u8 i;
 
@@ -538,7 +538,7 @@ void sub_800EF00(void)
     Rfu.unk_67 = CreateTask(sub_800E94C, 1);
 }
 
-bool8 sub_800EF1C(void)
+bool8 LmanAcceptSlotFlagIsNotZero(void)
 {
     if (lman.acceptSlot_flag)
     {
@@ -547,13 +547,13 @@ bool8 sub_800EF1C(void)
     return FALSE;
 }
 
-void sub_800EF38(void)
+void LinkRfu_StopManagerAndFinalizeSlots(void)
 {
     Rfu.unk_04 = 4;
     Rfu.unk_ce7 = lman.acceptSlot_flag;
 }
 
-bool32 sub_800EF58(bool32 a0)
+bool32 WaitRfuState(bool32 a0)
 {
     if (Rfu.unk_04 == 17 || a0)
     {
@@ -676,13 +676,13 @@ bool32 sub_800F0F8(void)
                     Rfu.unk_ce3 = 0;
                     if (Rfu.unk_ce4 == 1)
                     {
-                        sub_8011A64(2, 0x8000);
+                        RfuSetErrorStatus(2, 0x8000);
                         sub_8011170(0x8000);
                         return FALSE;
                     }
                     if (!lman.acceptSlot_flag)
                     {
-                        sub_800EDD4();
+                        LinkRfu_Shutdown();
                         gReceivedRemoteLinkPlayers = 0;
                         return FALSE;
                     }
@@ -831,15 +831,15 @@ bool32 sub_800F4F0(void)
     {
         rfu_REQ_disconnect(gRfuLinkStatus->connSlotFlag | gRfuLinkStatus->linkLossSlotFlag);
         rfu_waitREQComplete();
-        switchval = sub_8011A74();
+        switchval = RfuGetErrorStatus();
         if (switchval != 1 && switchval != 6 && switchval != 9)
-            sub_8011A64(2, 0x9000);
+            RfuSetErrorStatus(2, 0x9000);
         rfu_clearAllSlot();
         gReceivedRemoteLinkPlayers = FALSE;
         Rfu.linkRfuCallback = NULL;
         if (Rfu.unk_ce4 == 1)
         {
-            sub_8011A64(2, 0x9000);
+            RfuSetErrorStatus(2, 0x9000);
             sub_8011170(0x9000);
         }
         lman.state = lman.next_state = 0;
@@ -924,7 +924,7 @@ void rfu_func_080F97B8(void)
     }
 }
 
-struct GFtgtGname *sub_800F7DC(void)
+struct GFtgtGname *GetHostRFUtgtGname(void)
 {
     return &gUnknown_02022B14;
 }
@@ -1000,7 +1000,7 @@ void sub_800F86C(u8 unused)
                 {
                     Rfu.unk_80[i].unk_12 = 2;
                     sub_800F6FC(i);
-                    if (sub_800F7DC()->activity == 0x45 && gReceivedRemoteLinkPlayers != 0 && Rfu.unk_0c == 0)
+                    if (GetHostRFUtgtGname()->activity == 0x45 && gReceivedRemoteLinkPlayers != 0 && Rfu.unk_0c == 0)
                         sub_8010A70(gBlockRecvBuffer);
                 }
             }
@@ -1164,7 +1164,7 @@ void sub_800FD14(u16 command)
 
 void sub_800FE50(void *a0)
 {
-    if (gSendCmd[0] == 0 && !sub_8011A80())
+    if (gSendCmd[0] == 0 && !RfuIsErrorStatus1or2())
     {
         memcpy(Rfu.unk_f2, a0, sizeof(Rfu.unk_f2));
         sub_800FD14(0x2f00);
@@ -1535,7 +1535,7 @@ bool32 sub_80105EC(void)
     return FALSE;
 }
 
-bool32 sub_801064C(u16 a0, const u8 *a1)
+bool32 TrainerIdAndNameStillInPartnersList(u16 a0, const u8 *a1)
 {
     u8 r1 = sub_8011CE4(a1, a0);
     if (r1 == 0xFF)
@@ -1545,7 +1545,7 @@ bool32 sub_801064C(u16 a0, const u8 *a1)
     return FALSE;
 }
 
-void sub_8010688(u8 a0, u16 a1, const u8 *a2)
+void SendByteToPartnerByIdAndName(u8 a0, u16 a1, const u8 *a2)
 {
     u8 r4 = sub_8011CE4(a2, a1);
     Rfu.unk_cd1[r4] = a0;
@@ -1553,14 +1553,14 @@ void sub_8010688(u8 a0, u16 a1, const u8 *a2)
     rfu_NI_setSendData(1 << r4, 8, Rfu.unk_cd1 + r4, 1);
 }
 
-void sub_80106D4(void)
+void LinkRfuNIsend8(void)
 {
     Rfu.unk_c85 = 8;
     rfu_clearSlot(4, Rfu.unk_c3e);
     rfu_NI_setSendData(1 << Rfu.unk_c3e, 8, &Rfu.unk_c85, 1);
 }
 
-u32 sub_8010714(u16 a0, const u8 *a1)
+u32 WaitSendByteToPartnerByIdAndName(u16 a0, const u8 *a1)
 {
     u8 r0 = sub_8011CE4(a1, a0);
     if (r0 == 0xFF)
@@ -1597,7 +1597,7 @@ s32 sub_80107A0(void)
     if (gRfuSlotStatusNI[Rfu.unk_c3e]->recv.state == 0x46 || gRfuSlotStatusNI[Rfu.unk_c3e]->recv.state == 0x48)
     {
         rfu_clearSlot(8, Rfu.unk_c3e);
-        sub_8011A64(Rfu.unk_c86, 0);
+        RfuSetErrorStatus(Rfu.unk_c86, 0);
         retval = Rfu.unk_c86;
     }
     else if (gRfuSlotStatusNI[Rfu.unk_c3e]->recv.state == 0x47)
@@ -1842,7 +1842,7 @@ void sub_8010DB4(void)
             gWirelessCommType = 2;
         SetMainCallback2(CB2_LinkError);
         gMain.savedCallback = CB2_LinkError;
-        sub_800AF18((Rfu.unk_0a << 16) | (Rfu.unk_10 << 8) | Rfu.unk_12, Rfu.unk_124.unk_8c2, Rfu.unk_9e8.unk_232, sub_8011A74() == 2);
+        sub_800AF18((Rfu.unk_0a << 16) | (Rfu.unk_10 << 8) | Rfu.unk_12, Rfu.unk_124.unk_8c2, Rfu.unk_9e8.unk_232, RfuGetErrorStatus() == 2);
         Rfu.unk_ee = 2;
         CloseLink();
     }
@@ -1850,7 +1850,7 @@ void sub_8010DB4(void)
     {
         if (lman.childClockSlave_flag)
             rfu_LMAN_requestChangeAgbClockMaster();
-        sub_8011A64(1, 0x7000);
+        RfuSetErrorStatus(1, 0x7000);
         sub_8011170(0x7000);
     }
 }
@@ -1905,18 +1905,18 @@ void sub_8010F48(void)
     StringCopy(gUnknown_02022B22, gSaveBlock2Ptr->playerName);
 }
 
-void sub_8010F60(void)
+void ClearAndInitHostRFUtgtGname(void)
 {
     memset(&gUnknown_02022B14, 0, 0xD);
     sub_800DD94(&gUnknown_02022B14, 0, 0, 0);
 }
 
-void sub_8010F84(u8 a0, u32 a1, u32 a2)
+void SetHostRFUtgtGname(u8 a0, u32 a1, u32 a2)
 {
     sub_800DD94(&gUnknown_02022B14, a0, a2, a1);
 }
 
-void sub_8010FA0(bool32 a0, bool32 a1)
+void SetGnameBufferWonderFlags(bool32 a0, bool32 a1)
 {
     gUnknown_02022B14.unk_00.hasNews = a0;
     gUnknown_02022B14.unk_00.hasCard = a1;
@@ -1946,16 +1946,16 @@ void sub_801103C(void)
         r5->child_sprite_gender[i - 1] = sub_801100C(i);
 }
 
-void sub_8011068(u8 a0)
+void UpdateGameData_GroupLockedIn(u8 a0)
 {
     gUnknown_02022B14.started = a0;
     rfu_REQ_configGameData(0, 2, (const u8 *)&gUnknown_02022B14, gUnknown_02022B22);
 }
 
-void sub_8011090(u8 a0, u32 a1, u32 a2)
+void UpdateGameDataWithActivitySpriteGendersFlag(u8 a0, u32 a1, u32 a2)
 {
     if (a0)
-        sub_8010F84(a0, a1, a2);
+        SetHostRFUtgtGname(a0, a1, a2);
     rfu_REQ_configGameData(0, 2, (const u8 *)&gUnknown_02022B14, gUnknown_02022B22);
 }
 
@@ -1966,7 +1966,7 @@ void sub_80110B8(u32 a0)
     u32 r7;
     s32 r8;
 
-    if (sub_800F7DC()->activity == 0x45)
+    if (GetHostRFUtgtGname()->activity == 0x45)
     {
         r5 = 0;
         r7 = 0;
@@ -1981,7 +1981,7 @@ void sub_80110B8(u32 a0)
                     break;
             }
         }
-        sub_8011090(0x45, r7, 0);
+        UpdateGameDataWithActivitySpriteGendersFlag(0x45, r7, 0);
     }
 }
 
@@ -2038,7 +2038,7 @@ void sub_801120C(u8 a0, u8 unused1)
             if ((lman.param[0] >> i) & 1)
             {
                 struct GFtgtGname *structPtr = (void *)gRfuLinkStatus->partner[i].gname;
-                if (structPtr->activity == sub_800F7DC()->activity)
+                if (structPtr->activity == GetHostRFUtgtGname()->activity)
                 {
                     Rfu.unk_cd1[i] = 0;
                     Rfu.unk_cd5[i] = 0;
@@ -2085,21 +2085,21 @@ void sub_801120C(u8 a0, u8 unused1)
             else
                 sub_80111FC();
         }
-        sub_8011A64(2, a0);
+        RfuSetErrorStatus(2, a0);
         break;
     case 0x34:
         break;
     case 0x42 ... 0x44:
         break;
     case 0xf3:
-        sub_8011A64(1, a0);
+        RfuSetErrorStatus(1, a0);
         sub_8011170(a0);
         Rfu.unk_ef = 1;
         break;
     case 0xf0 ... 0xf2:
     case 0xff:
         sub_8011170(a0);
-        sub_8011A64(1, a0);
+        RfuSetErrorStatus(1, a0);
         Rfu.unk_cdb = 1;
         break;
     }
@@ -2121,7 +2121,7 @@ void sub_8011404(u8 a0, u8 unused1)
         Rfu.unk_c3e = lman.param[0];
         break;
     case 0x23:
-        sub_8011A64(2, a0);
+        RfuSetErrorStatus(2, a0);
         break;
     case 0x24:
         Rfu.unk_04 = 11;
@@ -2131,7 +2131,7 @@ void sub_8011404(u8 a0, u8 unused1)
         rfu_setRecvBuffer(0x10, Rfu.unk_c3e, Rfu.unk_c3f, 70);
         break;
     case 0x25:
-        sub_8011A64(2, 0x25);
+        RfuSetErrorStatus(2, 0x25);
         break;
     case 0x30:
         Rfu.unk_f0 = 2;
@@ -2141,7 +2141,7 @@ void sub_8011404(u8 a0, u8 unused1)
         if (Rfu.unk_f0 != 2)
             Rfu.unk_f0 = 4;
         if (Rfu.unk_c86 != 9)
-            sub_8011A64(2, a0);
+            RfuSetErrorStatus(2, a0);
         nullsub_5(gUnknown_082ED7FC, 5, 5);
         if (gReceivedRemoteLinkPlayers == 1)
             sub_8011170(a0);
@@ -2159,13 +2159,13 @@ void sub_8011404(u8 a0, u8 unused1)
     case 0x42 ... 0x44:
         break;
     case 0xF3:
-        sub_8011A64(1, a0);
+        RfuSetErrorStatus(1, a0);
         sub_8011170(a0);
         Rfu.unk_ef = 1;
         break;
     case 0xF0 ... 0xF2:
     case 0xFF:
-        sub_8011A64(1, a0);
+        RfuSetErrorStatus(1, a0);
         sub_8011170(a0);
         Rfu.unk_cdb = 1;
         break;
@@ -2214,10 +2214,10 @@ void sub_8011674(u8 a0, u8 unused1)
         Rfu.unk_04 = 0x11;
         break;
     case 0x10:
-        sub_8011A64(4, 0);
+        RfuSetErrorStatus(4, 0);
         break;
     case 0x11:
-        if (sub_800F7DC()->activity == 0x45 && Rfu.unk_cd9 == 0)
+        if (GetHostRFUtgtGname()->activity == 0x45 && Rfu.unk_cd9 == 0)
         {
             u8 idx = sub_8011628(lman.param[0]);
             if (idx != 0)
@@ -2240,7 +2240,7 @@ void sub_8011674(u8 a0, u8 unused1)
                 Rfu.unk_ce4 = 2;
             }
         }
-        else if (sub_800F7DC()->activity == 0x54)
+        else if (GetHostRFUtgtGname()->activity == 0x54)
         {
             rfu_REQ_disconnect(lman.acceptSlot_flag);
             rfu_waitREQComplete();
@@ -2252,7 +2252,7 @@ void sub_8011674(u8 a0, u8 unused1)
     case 0x13:
         break;
     case 0x14:
-        if (sub_800F7DC()->activity != 0x45 && lman.acceptCount > 1)
+        if (GetHostRFUtgtGname()->activity != 0x45 && lman.acceptCount > 1)
         {
             r1 = 1 << sub_800E87C(lman.param[0]);
             rfu_REQ_disconnect(lman.acceptSlot_flag ^ r1);
@@ -2279,16 +2279,16 @@ void sub_8011674(u8 a0, u8 unused1)
         }
         else
         {
-            sub_8011A64(2, a0);
+            RfuSetErrorStatus(2, a0);
         }
         break;
     case 0x24:
         Rfu.unk_04 = 0xD;
-        sub_8011A64(3, 0);
+        RfuSetErrorStatus(3, 0);
         rfu_setRecvBuffer(0x10, Rfu.unk_c3e, Rfu.unk_c3f, 70);
         break;
     case 0x25:
-        sub_8011A64(2, a0);
+        RfuSetErrorStatus(2, a0);
         break;
     case 0x31:
         if (lman.acceptSlot_flag & lman.param[0])
@@ -2324,7 +2324,7 @@ void sub_8011674(u8 a0, u8 unused1)
         if (gRfuLinkStatus->parentChild == 0xFF && lman.pcswitch_flag == 0 && FuncIsActiveTask(sub_800EB44) == TRUE)
             Rfu.unk_04 = 0x11;
 
-        sub_8011A64(2, a0);
+        RfuSetErrorStatus(2, a0);
         break;
     case 0x40:
         Rfu.unk_ce3 = 0;
@@ -2332,14 +2332,14 @@ void sub_8011674(u8 a0, u8 unused1)
     case 0x42 ... 0x44:
         break;
     case 0xF3:
-        sub_8011A64(1, a0);
+        RfuSetErrorStatus(1, a0);
         sub_8011170(a0);
         Rfu.unk_ef = 1;
         break;
     case 0xF0 ... 0xF2:
     case 0xFF:
         sub_8011170(a0);
-        sub_8011A64(1, a0);
+        RfuSetErrorStatus(1, a0);
         Rfu.unk_cdb = 0;
         break;
     }
@@ -2350,20 +2350,20 @@ void sub_8011A50(void)
     Rfu.unk_ce4 = 2;
 }
 
-void sub_8011A64(u8 a0, u16 a1)
+void RfuSetErrorStatus(u8 a0, u16 a1)
 {
     Rfu.unk_f1 = a0;
     Rfu.unk_0a = a1;
 }
 
-u8 sub_8011A74(void)
+u8 RfuGetErrorStatus(void)
 {
     return Rfu.unk_f1;
 }
 
-bool32 sub_8011A80(void)
+bool32 RfuIsErrorStatus1or2(void)
 {
-    u32 var = sub_8011A74() - 1;
+    u32 var = RfuGetErrorStatus() - 1;
     if (var < 2)
         return TRUE;
     else
@@ -2409,7 +2409,7 @@ void sub_8011AFC(void)
     if (IsWirelessAdapterConnected())
     {
         gLinkType = LINKTYPE_0x1111;
-        sub_800B488();
+        SetWirelessCommType1();
         OpenLink();
         SeedRng(gMain.vblankCounter2);
         for (i = 0; i < 4; i++)
@@ -2425,7 +2425,7 @@ void sub_8011AFC(void)
     }
 }
 
-bool32 sub_8011B90(void)
+bool32 IsUnionRoomListenTaskActive(void)
 {
     return FuncIsActiveTask(sub_800EB44);
 }
@@ -2450,7 +2450,7 @@ void sub_8011BF8(void)
     UpdatePaletteFade();
 }
 
-void sub_8011C10(u32 a0)
+void InitializeRfuLinkManager_LinkLeader(u32 a0)
 {
     Rfu.unk_0c = 1;
     sub_8010F48();
@@ -2460,7 +2460,7 @@ void sub_8011C10(u32 a0)
     sub_800EE78();
 }
 
-void sub_8011C5C(void)
+void InitializeRfuLinkManager_JoinGroup(void)
 {
     Rfu.unk_0c = 0;
     sub_8010F48();
@@ -2468,7 +2468,7 @@ void sub_8011C5C(void)
     sub_800EF00();
 }
 
-void sub_8011C84(void)
+void InitializeRfuLinkManager_EnterUnionRoom(void)
 {
     Rfu.unk_0c = 2;
     sub_8010F48();
@@ -2516,7 +2516,7 @@ void sub_8011D6C(u32 a0)
     Rfu.unk_cda = sub_800E87C(Rfu.unk_ce2);
 }
 
-void sub_8011DC0(const u8 *ptr, u16 a1)
+void RequestDisconnectSlotByTrainerNameAndId(const u8 *ptr, u16 a1)
 {
     u8 var = sub_8011CE4(ptr, a1);
     if (var != 0xFF)
@@ -2584,13 +2584,13 @@ void sub_8011EF4(u8 taskId)
                 if (sub_800EEBC())
                     DestroyTask(taskId);
             }
-            else if (sub_800F7DC()->activity == 0x15 || sub_800F7DC()->activity == 0x16)
+            else if (GetHostRFUtgtGname()->activity == 0x15 || GetHostRFUtgtGname()->activity == 0x16)
             {
                 data[15]++;
             }
             else
             {
-                sub_8011A64(2, 0x7000);
+                RfuSetErrorStatus(2, 0x7000);
                 DestroyTask(taskId);
             }
         }
@@ -2607,12 +2607,12 @@ void sub_8011EF4(u8 taskId)
 
     if (data[15] > 240)
     {
-        sub_8011A64(2, 0x7000);
+        RfuSetErrorStatus(2, 0x7000);
         DestroyTask(taskId);
     }
 }
 
-void sub_8011FC8(const u8 *src, u16 trainerId)
+void CreateTask_RfuReconnectWithParent(const u8 *src, u16 trainerId)
 {
     u8 taskId;
     s16 *data;
@@ -2626,7 +2626,7 @@ void sub_8011FC8(const u8 *src, u16 trainerId)
 
 bool32 sub_801200C(s16 a1, struct GFtgtGname *structPtr)
 {
-    if (sub_800F7DC()->activity == 0x45)
+    if (GetHostRFUtgtGname()->activity == 0x45)
     {
         if (structPtr->activity != 0x45)
             return TRUE;
@@ -2663,7 +2663,7 @@ void sub_801209C(u8 taskId)
 
     if (++gTasks[taskId].data[0] > 300)
     {
-        sub_8011A64(2, 0x7000);
+        RfuSetErrorStatus(2, 0x7000);
         DestroyTask(taskId);
     }
 
@@ -2683,7 +2683,7 @@ void sub_801209C(u8 taskId)
             }
             else
             {
-                sub_8011A64(2, 0x7000);
+                RfuSetErrorStatus(2, 0x7000);
                 DestroyTask(taskId);
             }
         }
diff --git a/src/link_rfu_3.c b/src/link_rfu_3.c
index 535deeca68..b7d3e808cf 100644
--- a/src/link_rfu_3.c
+++ b/src/link_rfu_3.c
@@ -625,7 +625,7 @@ void sub_800DD94(struct GFtgtGname *data, u8 r9, bool32 r2, s32 r3)
     data->unk_00.gameClear = FlagGet(FLAG_SYS_GAME_CLEAR);
 }
 
-bool8 sub_800DE7C(struct GFtgtGname *buff1, u8 *buff2, u8 idx)
+bool8 LinkRfu_GetNameIfCompatible(struct GFtgtGname *buff1, u8 *buff2, u8 idx)
 {
     bool8 retVal;
 
@@ -660,7 +660,7 @@ bool8 sub_800DE7C(struct GFtgtGname *buff1, u8 *buff2, u8 idx)
     return retVal;
 }
 
-bool8 sub_800DF34(struct GFtgtGname *buff1, u8 *buff2, u8 idx)
+bool8 LinkRfu_GetNameIfSerial7F7D(struct GFtgtGname *buff1, u8 *buff2, u8 idx)
 {
     bool8 retVal = FALSE;
     if (gRfuLinkStatus->partner[idx].serialNo == 0x7F7D)
@@ -677,7 +677,7 @@ bool8 sub_800DF34(struct GFtgtGname *buff1, u8 *buff2, u8 idx)
     return retVal;
 }
 
-void sub_800DF90(struct GFtgtGname *buff1, u8 *buff2)
+void LinkRfu3_SetGnameUnameFromStaticBuffers(struct GFtgtGname *buff1, u8 *buff2)
 {
     memcpy(buff1, &gUnknown_02022B14, 0xD);
     memcpy(buff2, gUnknown_02022B22, 8);
@@ -820,7 +820,7 @@ void sub_800E174(void)
         gMain.oamBuffer[125].paletteNum = sprite->oam.paletteNum;
         gMain.oamBuffer[125].tileNum = sprite->data[6] + sprite->anims[sprite->data[2]][sprite->data[4]].frame.imageValue;
         CpuCopy16(gMain.oamBuffer + 125, (struct OamData *)OAM + 125, sizeof(struct OamData));
-        if (sub_8011A74() == 1)
+        if (RfuGetErrorStatus() == 1)
         {
             DestroyWirelessStatusIndicatorSprite();
         }
@@ -908,7 +908,7 @@ void RecordMixTrainerNames(void)
     }
 }
 
-bool32 sub_800E540(u16 id, u8 *name)
+bool32 PlayerHasMetTrainerBefore(u16 id, u8 *name)
 {
     s32 i;
 
diff --git a/src/menu.c b/src/menu.c
index 62387c3230..8bd85727e5 100644
--- a/src/menu.c
+++ b/src/menu.c
@@ -2107,7 +2107,7 @@ void sub_819A27C(u8 windowId, u16 speciesId, u32 personality, u16 x, u16 y)
     BlitBitmapToWindow(windowId, GetMonIconPtr(speciesId, personality, 1), x, y, 32, 32);
 }
 
-void sub_819A2BC(u8 palOffset, u8 palId)
+void ListMenuLoadStdPalAt(u8 palOffset, u8 palId)
 {
     const u16 *palette;
 
diff --git a/src/mevent2.c b/src/mevent2.c
index 2991ac27ca..3e524ce350 100755
--- a/src/mevent2.c
+++ b/src/mevent2.c
@@ -548,12 +548,12 @@ u16 mevent_081445C0(u32 command)
     return 0;
 }
 
-void sub_801B940(void)
+void ResetReceivedWonderCardFlag(void)
 {
     gUnknown_02022C70 = FALSE;
 }
 
-bool32 sub_801B94C(u16 a0)
+bool32 MEventHandleReceivedWonderCard(u16 a0)
 {
     gUnknown_02022C70 = FALSE;
     if (a0 == 0)
diff --git a/src/party_menu.c b/src/party_menu.c
index 4ed7ab1b24..a4d588cbcc 100755
--- a/src/party_menu.c
+++ b/src/party_menu.c
@@ -3527,7 +3527,7 @@ static void CursorCb_Register(u8 taskId)
     u16 species = GetMonData(&gPlayerParty[gPartyMenu.slotId], MON_DATA_SPECIES);
     u8 obedience = GetMonData(&gPlayerParty[gPartyMenu.slotId], MON_DATA_OBEDIENCE);
 
-    switch (CanRegisterMonForTradingBoard(*(struct GFtgtGnameSub *)sub_800F7DC(), species2, species, obedience))
+    switch (CanRegisterMonForTradingBoard(*(struct GFtgtGnameSub *)GetHostRFUtgtGname(), species2, species, obedience))
     {
     case CANT_REGISTER_MON:
         StringExpandPlaceholders(gStringVar4, gText_PkmnCantBeTradedNow);
@@ -3553,7 +3553,7 @@ static void CursorCb_Trade1(u8 taskId)
     u16 species2 = GetMonData(&gPlayerParty[gPartyMenu.slotId], MON_DATA_SPECIES2);
     u16 species = GetMonData(&gPlayerParty[gPartyMenu.slotId], MON_DATA_SPECIES);
     u8 obedience = GetMonData(&gPlayerParty[gPartyMenu.slotId], MON_DATA_OBEDIENCE);
-    u32 stringId = GetUnionRoomTradeMessageId(*(struct GFtgtGnameSub *)sub_800F7DC(), gUnknown_02022C38, species2, gUnionRoomOfferedSpecies, gUnionRoomRequestedMonType, species, obedience);
+    u32 stringId = GetUnionRoomTradeMessageId(*(struct GFtgtGnameSub *)GetHostRFUtgtGname(), gPartnerTgtGnameSub, species2, gUnionRoomOfferedSpecies, gUnionRoomRequestedMonType, species, obedience);
 
     if (stringId != UR_TRADE_MSG_NONE)
     {
diff --git a/src/pokemon_jump.c b/src/pokemon_jump.c
index f2f416c35d..da8695247c 100755
--- a/src/pokemon_jump.c
+++ b/src/pokemon_jump.c
@@ -400,7 +400,7 @@ static const struct PokemonJumpMons gPkmnJumpSpecies[] =
     { .species = SPECIES_BAGON,      .unk2 = 1, },
 };
 
-void sub_802A9A8(u16 partyIndex, MainCallback callback)
+void StartPokemonJump(u16 partyIndex, MainCallback callback)
 {
     u8 taskId;
 
diff --git a/src/trade.c b/src/trade.c
index e22180ae97..c9fd7b1edc 100644
--- a/src/trade.c
+++ b/src/trade.c
@@ -52,6 +52,7 @@
 #include "constants/rgb.h"
 #include "constants/species.h"
 #include "constants/songs.h"
+#include "constants/union_room.h"
 
 #define Trade_SendData(ptr) (SendBlock(bitmask_all_link_players_but_self(), ptr->linkData, 20))
 
@@ -234,7 +235,7 @@ static void CB2_SaveAndEndWirelessTrade(void);
 
 static bool8 SendLinkData(const void *linkData, u32 size)
 {
-    if (gUnknown_02022C2C == 29)
+    if (gPlayerCurrActivity == ACTIVITY_29)
     {
         rfu_NI_setSendData(lman.acceptSlot_flag, 84, linkData, size);
         return TRUE;
@@ -252,7 +253,7 @@ static void sub_80771AC(u8 a0)
 
 static bool32 sub_80771BC(void)
 {
-    if (gUnknown_02022C2C == 29)
+    if (gPlayerCurrActivity == ACTIVITY_29)
     {
         if (gRfuSlotStatusNI[sub_800E87C(lman.acceptSlot_flag)]->send.state == 0)
             return TRUE;
@@ -288,7 +289,7 @@ static void TradeResetReceivedFlag(u32 who)
 
 static bool32 IsWirelessTrade(void)
 {
-    if (gWirelessCommType && gUnknown_02022C2C == 29)
+    if (gWirelessCommType && gPlayerCurrActivity == ACTIVITY_29)
         return TRUE;
     else
         return FALSE;
@@ -393,7 +394,7 @@ static void CB2_CreateTradeMenu(void)
 
             if (gWirelessCommType)
             {
-                sub_800B488();
+                SetWirelessCommType1();
                 OpenLink();
                 sub_8011BA4();
             }
diff --git a/src/union_room.c b/src/union_room.c
index cd45907f50..28e1139dda 100644
--- a/src/union_room.c
+++ b/src/union_room.c
@@ -41,6 +41,7 @@
 #include "trade.h"
 #include "trainer_card.h"
 #include "union_room.h"
+#include "union_room_battle.h"
 #include "union_room_chat.h"
 #include "union_room_player_avatar.h"
 #include "window.h"
@@ -54,156 +55,171 @@
 #include "constants/species.h"
 #include "constants/union_room.h"
 
-EWRAM_DATA u8 sUnionRoomPlayerName[12] = {};
-EWRAM_DATA u8 gUnknown_02022C2C = 0;
-EWRAM_DATA u8 gUnknown_02022C2D = 0;
-EWRAM_DATA union UnkUnion_Main gUnknown_02022C30 = {};
-EWRAM_DATA u32 gFiller_02022C34 = 0;
-EWRAM_DATA struct GFtgtGnameSub gUnknown_02022C38 = {};
+static EWRAM_DATA u8 sUnionRoomPlayerName[12] = {};
+EWRAM_DATA u8 gPlayerCurrActivity = 0;
+static EWRAM_DATA u8 sPlayerActivityGroupSize = 0;
+static EWRAM_DATA union WirelessLink_Main sWirelessLinkMain = {};
+static EWRAM_DATA u32 sUnused = 0;
+EWRAM_DATA struct GFtgtGnameSub gPartnerTgtGnameSub = {};
 EWRAM_DATA u16 gUnionRoomOfferedSpecies = 0;
 EWRAM_DATA u8 gUnionRoomRequestedMonType = 0;
 static EWRAM_DATA struct UnionRoomTrade sUnionRoomTrade = {};
 
 // IWRAM vars
-static struct UnkStruct_Leader *gUnknown_03000DA0;
-static struct UnkStruct_Group *gUnknown_03000DA4;
-static struct UnkStruct_URoom *gUnknown_03000DA8;
+static struct WirelessLink_Leader *sLeader;
+static struct WirelessLink_Group *sGroup;
+static struct WirelessLink_URoom *sURoom;
 
 // this file's functions
-void sub_80173E0(u8 windowId, u8 arg1, const u8 *str, u8 arg3, u8 arg4, u8 arg5);
-u16 ReadAsU16(const u8 *ptr);
-void sub_8012780(u8 taskId);
-void sub_80134E8(u8 taskId);
-void sub_8013C7C(u8 taskId);
-void sub_8014A40(u8 taskId);
-void sub_8014F48(u8 taskId);
-void sub_80152F4(u8 taskId);
-void sub_80156E0(u8 taskId);
-void sub_80175EC(struct UnkStruct_Main4 *arg0, u8 count);
-void sub_8017580(struct UnkStruct_x20 *arg0, u8 count);
-u8 sub_8016FC0(struct UnkStruct_Main4 *arg0, u32 arg1);
-u8 sub_8016FF0(struct UnkStruct_Main4 *arg0, u32 arg1);
-bool8 PrintOnTextbox(u8 *textState, const u8 *str);
-bool8 sub_801320C(struct UnkStruct_Leader *data, u32 arg1, u32 arg2);
-u8 sub_8013398(struct UnkStruct_Main0 *arg0);
-s8 sub_80170B8(u8 *arg0, bool32 arg1);
-void sub_8018404(u8 *dest, struct UnkStruct_x20 *arg1);
-void sub_8012F64(struct UnkStruct_Leader *data);
-void sub_80149C4(void);
-u8 sub_80132D4(struct UnkStruct_Main0 *arg0);
-void sub_80178A0(u8 arg0, u8 arg1, u8 arg2, struct UnkStruct_x20 *arg3, u8 arg4, u8 id);
-u32 sub_80176E4(struct UnkStruct_x20 *arg0, struct UnkStruct_x1C *arg1);
-u8 sub_8017734(struct UnkStruct_x20 *arg0, struct UnkStruct_x1C *arg1, u8 arg2);
-u8 sub_8013E44(void);
-u32 sub_8013B8C(struct UnkStruct_Group *arg0, s32 id);
-void sub_8013BD8(struct UnkStruct_Group *arg0, s32 id);
-void sub_80173D4(void);
-void sub_80177B8(u8 arg0, u8 arg1, u8 arg2, struct UnkStruct_x20 *arg3, u8 arg4, u8 id);
-bool32 sub_8017678(struct UnkStruct_Shared *arg0, struct UnkStruct_Shared *arg1);
+static void UR_AddTextPrinterParameterized(u8 windowId, u8 arg1, const u8 *str, u8 arg3, u8 arg4, u8 arg5);
+static u16 ReadAsU16(const u8 *ptr);
+static void Task_TryBecomeLinkLeader(u8 taskId);
+static void Task_TryJoinLinkGroup(u8 taskId);
+static void Task_ListenToWireless(u8 taskId);
+static void Task_MEvent_Leader(u8 taskId);
+static void Task_CardOrNewsWithFriend(u8 taskId);
+static void Task_CardOrNewsOverWireless(u8 taskId);
+static void Task_RunUnionRoom(u8 taskId);
+static void ClearUnkStruct_x1CArray(struct UnkStruct_Main4 *arg0, u8 count);
+static void ClearUnkStruct_x20Array(struct UnkStruct_x20 *arg0, u8 count);
+static u8 CreateTask_ListenForPartnersWithCompatibleSerialNos(struct UnkStruct_Main4 *arg0, u32 arg1);
+static u8 CreateTask_ListenForPartnersWithSerial7F7D(struct UnkStruct_Main4 *arg0, u32 arg1);
+static bool8 PrintOnTextbox(u8 *textState, const u8 *str);
+static bool8 Leader_SetStateIfMemberListChanged(struct WirelessLink_Leader *data, u32 arg1, u32 arg2);
+static u8 sub_8013398(struct UnkStruct_Main0 *arg0);
+static s8 UnionRoomHandleYesNo(u8 *arg0, bool32 arg1);
+static void IntlConvPartnerUname7(u8 *dest, struct UnkStruct_x20 *arg1);
+static void Leader_DestroyResources(struct WirelessLink_Leader *data);
+static void CreateTask_RunScriptAndFadeToActivity(void);
+static u8 LeaderUpdateGroupMembership(struct UnkStruct_Main0 *arg0);
+static void PrintGroupMemberCandidateOnWindowWithColor(u8 arg0, u8 arg1, u8 arg2, struct UnkStruct_x20 *arg3, u8 arg4, u8 id);
+static u32 Findx20Inx1CArray(struct UnkStruct_x20 *arg0, struct UnkStruct_x1C *arg1);
+static u8 Appendx1Ctox20(struct UnkStruct_x20 *arg0, struct UnkStruct_x1C *arg1, u8 arg2);
+static u8 GetNewLeaderCandidate(void);
+static u32 IsTryingToTradeAcrossVersionTooSoon(struct WirelessLink_Group *data, s32 id);
+static void AskToJoinRfuGroup(struct WirelessLink_Group *data, s32 id);
+static void JoinGroup_EnableScriptContexts(void);
+static void PrintUnionRoomGroupOnWindow(u8 arg0, u8 arg1, u8 arg2, struct UnkStruct_x20 *arg3, u8 arg4, u8 id);
+static bool32 AreUnionRoomPlayerGnamesDifferent(struct WirelessGnameUnamePair *arg0, struct WirelessGnameUnamePair *arg1);
 static u32 GetPartyPositionOfRegisteredMon(struct UnionRoomTrade *arg0, u8 multiplayerId);
 static void ResetUnionRoomTrade(struct UnionRoomTrade *arg0);
-void sub_801AC54(void);
-void sub_80149D8(void);
-void MG_DrawTextBorder(u8 windowId);
-s8 mevent_message_print_and_prompt_yes_no(u8 *textState, u8 *arg1, u8 arg2, const u8 *str);
-bool32 sub_8016F1C(struct GFtgtGname *arg0, s16 arg1);
-u8 sub_8016DF0(struct UnkStruct_Main4 *arg0, struct UnkStruct_Main4 *arg1, u32 arg2);
-void sub_8019F2C(void);
+static void CreateTask_StartActivity(void);
+static bool32 GetGnameWonderFlagByLinkGroup(struct GFtgtGname *arg0, s16 arg1);
+static u8 CreateTask_SearchForChildOrParent(struct UnkStruct_Main4 *arg0, struct UnkStruct_Main4 *arg1, u32 arg2);
 static bool32 RegisterTradeMonAndGetIsEgg(u32 monId, struct UnionRoomTrade *trade);
 static void RegisterTradeMon(u32 monId, struct UnionRoomTrade *arg1);
-void sub_80181CC(void);
-bool32 sub_8017940(void);
-u8 sub_8016B00(void);
-void sub_801A274(struct UnkStruct_URoom *arg0);
-bool32 sub_8017FD8(struct UnkStruct_URoom *arg0);
-void sub_801689C(struct UnkStruct_URoom *arg0);
-u8 sub_80181DC(struct UnkStruct_URoom *arg0);
-bool32 sub_80168DC(struct UnkStruct_URoom *arg0);
-bool32 sub_801704C(void);
-s32 sub_8017CF8(s32 arg1, struct UnkStruct_Main0 *arg0);
-s32 sub_80179D4(struct UnkStruct_Main0 *arg0, u8 arg1, u8 arg2, u32 playerGender);
-void sub_801818C(bool32 arg0);
-s32 sub_8017178(u8 *arg0, u8 *arg1, u8 *arg2, const struct WindowTemplate *winTemplate, const struct ListMenuTemplate *menuTemplate);
-s32 sub_80172A0(u8 *arg0, u8 *arg1, u8 *arg2, u8 *arg3, const struct WindowTemplate *winTemplate, const struct ListMenuTemplate *menuTemplate, struct UnkStruct_Main0 *arg6);
-s32 sub_8017CB0(struct UnkStruct_x20 * arg, s32 arg1);
-bool32 HasAtLeastTwoMonsOfLevel30OrLower(void);
-u32 sub_8017984(s32 arg0);
-void sub_8018220(u8 *unused, struct UnkStruct_URoom *arg1, bool8 arg2);
-void sub_8017D9C(u8 *dst, s32 arg1, u32 playerGender);
-u32 sub_80179AC(struct UnkStruct_x20 *arg0);
-void sub_8017E00(u8 *dst, u8 arg1);
-void sub_80173B0(void);
-s32 sub_8017D04(u32 type, u32 species);
-bool32 sub_8017020(const u8 *src);
-u8 sub_8019BA8(struct UnkStruct_8019BA8 * );
-s32 sub_8017EA0(u8 *dst, u32 gender, u16 *arg2, struct UnkStruct_URoom *arg3);
-void sub_801697C(u8 taskId);
-bool8 sub_8017630(struct UnkStruct_Shared* arg0, const struct UnkStruct_Shared* arg1);
-void sub_8013278(u8 windowId, s32 itemId, u8 y);
-void sub_8013DF4(u8 windowId, s32 itemId, u8 y);
-void sub_8017BE8(u8 windowId, s32 itemId, u8 y);
-void nullsub_14(u8 windowId, s32 itemId, u8 y);
+static void UR_EnableScriptContext2AndFreezeObjectEvents(void);
+static bool32 PlayerIsTalkingToUnionRoomAide(void);
+static u8 HandlePlayerListUpdate(void);
+static bool32 PollPartnerYesNoResponse(struct WirelessLink_URoom *data);
+static void ReceiveUnionRoomActivityPacket(struct WirelessLink_URoom *data);
+static u8 GetActivePartnerSpriteGenderParam(struct WirelessLink_URoom *data);
+static bool32 UnionRoom_HandleContactFromOtherPlayer(struct WirelessLink_URoom *data);
+static bool32 UR_RunTextPrinters_CheckPrinter0Active(void);
+static s32 GetUnionRoomPlayerGender(s32 arg1, struct UnkStruct_Main0 *arg0);
+static s32 UnionRoomGetPlayerInteractionResponse(struct UnkStruct_Main0 *arg0, u8 arg1, u8 arg2, u32 playerGender);
+static void HandleCancelTrade(bool32 arg0);
+static s32 ListMenuHandler_AllItemsAvailable(u8 *arg0, u8 *arg1, u8 *arg2, const struct WindowTemplate *winTemplate, const struct ListMenuTemplate *menuTemplate);
+static s32 TradeBoardMenuHandler(u8 *arg0, u8 *arg1, u8 *arg2, u8 *arg3, const struct WindowTemplate *winTemplate, const struct ListMenuTemplate *menuTemplate, struct UnkStruct_Main0 *arg6);
+static s32 GetIndexOfNthTradeBoardOffer(struct UnkStruct_x20 * arg, s32 arg1);
+static bool32 HasAtLeastTwoMonsOfLevel30OrLower(void);
+static u32 GetResponseIdx_InviteToURoomActivity(s32 arg0);
+static void ViewURoomPartnerTrainerCard(u8 *unused, struct WirelessLink_URoom *data, bool8 arg2);
+static void GetURoomActivityRejectMsg(u8 *dst, s32 arg1, u32 playerGender);
+static u32 ConvPartnerUnameAndGetWhetherMetAlready(struct UnkStruct_x20 *arg0);
+static void GetURoomActivityStartMsg(u8 *dst, u8 arg1);
+static void UR_ClearBg0(void);
+static s32 IsRequestedTypeOrEggInPlayerParty(u32 type, u32 species);
+static bool32 UR_PrintFieldMessage(const u8 *src);
+static s32 GetChatLeaderActionRequestMessage(u8 *dst, u32 gender, u16 *arg2, struct WirelessLink_URoom *data);
+static void Task_InitUnionRoom(u8 taskId);
+static bool8 AreGnameUnameDifferent(struct WirelessGnameUnamePair* arg0, const struct WirelessGnameUnamePair* arg1);
+static void ItemPrintFunc_PossibleGroupMembers(u8 windowId, s32 itemId, u8 y);
+static void ListMenuItemPrintFunc_UnionRoomGroups(u8 windowId, s32 itemId, u8 y);
+static void TradeBoardListMenuItemPrintFunc(u8 windowId, s32 itemId, u8 y);
+static void nullsub_14(u8 windowId, s32 itemId, u8 y);
 
 #include "data/union_room.h"
 
 // code
-void sub_80124EC(u8 windowId, u8 arg1, u8 stringId)
+static void PrintNumPlayersWaitingForMsg(u8 windowId, u8 capacityCode, u8 stringId)
 {
     FillWindowPixelBuffer(windowId, PIXEL_FILL(1));
-    switch (arg1 << 8)
+    switch (capacityCode << 8)
     {
-    case 0x200:
-        sub_80173E0(windowId, 1, sPlayersNeededOrModeTexts[0][stringId - 1], 0, 1, 0);
+    case LINK_GROUP_CAPACITY(0, 2):
+        UR_AddTextPrinterParameterized(windowId, 1, sPlayersNeededOrModeTexts[0][stringId - 1], 0, 1, UR_COLOR_DKE_WHT_LTE);
         break;
-    case 0x400:
-        sub_80173E0(windowId, 1, sPlayersNeededOrModeTexts[1][stringId - 1], 0, 1, 0);
+    case LINK_GROUP_CAPACITY(0, 4):
+        UR_AddTextPrinterParameterized(windowId, 1, sPlayersNeededOrModeTexts[1][stringId - 1], 0, 1, UR_COLOR_DKE_WHT_LTE);
         break;
-    case 0x2500:
-        sub_80173E0(windowId, 1, sPlayersNeededOrModeTexts[2][stringId - 1], 0, 1, 0);
+    case LINK_GROUP_CAPACITY(2, 5):
+        UR_AddTextPrinterParameterized(windowId, 1, sPlayersNeededOrModeTexts[2][stringId - 1], 0, 1, UR_COLOR_DKE_WHT_LTE);
         break;
-    case 0x3500:
-        sub_80173E0(windowId, 1, sPlayersNeededOrModeTexts[3][stringId - 1], 0, 1, 0);
+    case LINK_GROUP_CAPACITY(3, 5):
+        UR_AddTextPrinterParameterized(windowId, 1, sPlayersNeededOrModeTexts[3][stringId - 1], 0, 1, UR_COLOR_DKE_WHT_LTE);
         break;
-    case 0x2400:
-        sub_80173E0(windowId, 1, sPlayersNeededOrModeTexts[4][stringId - 1], 0, 1, 0);
+    case LINK_GROUP_CAPACITY(2, 4):
+        UR_AddTextPrinterParameterized(windowId, 1, sPlayersNeededOrModeTexts[4][stringId - 1], 0, 1, UR_COLOR_DKE_WHT_LTE);
         break;
     }
 
     CopyWindowToVram(windowId, 2);
 }
 
-void sub_80125BC(u8 windowId)
+static void PrintPlayerNameAndIdOnWindow(u8 windowId)
 {
     u8 text[30];
     u8 *txtPtr;
 
-    sub_80173E0(windowId, 1, gSaveBlock2Ptr->playerName, 0, 1, 0);
+    UR_AddTextPrinterParameterized(windowId, 1, gSaveBlock2Ptr->playerName, 0, 1, UR_COLOR_DKE_WHT_LTE);
     txtPtr = StringCopy(text, sText_ID);
     ConvertIntToDecimalStringN(txtPtr, ReadAsU16(gSaveBlock2Ptr->playerTrainerId), STR_CONV_MODE_LEADING_ZEROS, 5);
-    sub_80173E0(windowId, 1, text, 0, 0x11, 0);
+    UR_AddTextPrinterParameterized(windowId, 1, text, 0, 0x11, UR_COLOR_DKE_WHT_LTE);
 }
 
-void sub_801262C(u8 *dst, u8 caseId)
+static void StringExpandPlaceholders_AwaitingCommFromAnother(u8 *dst, u8 caseId)
 {
     switch (caseId)
     {
-    case 1 ... 4:
-    case 9 ... 11:
-    case 14 ... 16:
-    case 21 ... 28:
+    case ACTIVITY_BATTLE_SINGLE:
+    case ACTIVITY_BATTLE_DOUBLE:
+    case ACTIVITY_BATTLE_MULTI:
+    case ACTIVITY_TRADE:
+    case ACTIVITY_POKEMON_JUMP:
+    case ACTIVITY_BERRY_CRUSH:
+    case ACTIVITY_BERRY_PICK:
+    case ACTIVITY_BATTLE_TOWER:
+    case ACTIVITY_BATTLE_TOWER_OPEN:
+    case ACTIVITY_RECORD_CORNER:
+    case ACTIVITY_BERRY_BLENDER:
+    case ACTIVITY_WONDER_CARD2:
+    case ACTIVITY_WONDER_NEWS2:
+    case ACTIVITY_CONTEST_COOL:
+    case ACTIVITY_CONTEST_BEAUTY:
+    case ACTIVITY_CONTEST_CUTE:
+    case ACTIVITY_CONTEST_SMART:
+    case ACTIVITY_CONTEST_TOUGH:
         // UB: argument *dst isn't used, instead it always prints to gStringVar4
         StringExpandPlaceholders(gStringVar4, sText_AwaitingCommunication);
         break;
     }
 }
 
-bool32 sub_80126CC(u32 caseId)
+static bool32 IsActivityWithVariableGroupSize(u32 caseId)
 {
     switch (caseId)
     {
-    case 9 ... 11:
-    case 15 ... 16:
-    case 23 ... 27:
+    case ACTIVITY_POKEMON_JUMP:
+    case ACTIVITY_BERRY_CRUSH:
+    case ACTIVITY_BERRY_PICK:
+    case ACTIVITY_RECORD_CORNER:
+    case ACTIVITY_BERRY_BLENDER:
+    case ACTIVITY_CONTEST_COOL:
+    case ACTIVITY_CONTEST_BEAUTY:
+    case ACTIVITY_CONTEST_CUTE:
+    case ACTIVITY_CONTEST_SMART:
+    case ACTIVITY_CONTEST_TOUGH:
         return TRUE;
     default:
         return FALSE;
@@ -213,49 +229,49 @@ bool32 sub_80126CC(u32 caseId)
 void TryBecomeLinkLeader(void)
 {
     u8 taskId;
-    struct UnkStruct_Leader *dataPtr;
+    struct WirelessLink_Leader *data;
 
-    taskId = CreateTask(sub_8012780, 0);
-    gUnknown_02022C30.leader = dataPtr = (void*)(gTasks[taskId].data);
-    gUnknown_03000DA0 = dataPtr;
+    taskId = CreateTask(Task_TryBecomeLinkLeader, 0);
+    sWirelessLinkMain.leader = data = (void*)(gTasks[taskId].data);
+    sLeader = data;
 
-    dataPtr->state = 0;
-    dataPtr->textState = 0;
+    data->state = 0;
+    data->textState = 0;
     gSpecialVar_Result = 0;
 }
 
-void sub_8012780(u8 taskId)
+static void Task_TryBecomeLinkLeader(u8 taskId)
 {
     u32 id, val;
-    struct UnkStruct_Leader *data = gUnknown_02022C30.leader;
+    struct WirelessLink_Leader *data = sWirelessLinkMain.leader;
 
     switch (data->state)
     {
     case 0:
         if (gSpecialVar_0x8004 == LINK_GROUP_BATTLE_TOWER && gSaveBlock2Ptr->frontier.lvlMode == FRONTIER_LVL_OPEN)
             gSpecialVar_0x8004++;
-        gUnknown_02022C2C = gUnknown_082F00C4[gSpecialVar_0x8004];
-        gUnknown_02022C2D = gUnknown_082F00C4[gSpecialVar_0x8004] >> 8;
-        sub_8010F84(gUnknown_02022C2C, 0, 0);
-        sub_800B488();
+        gPlayerCurrActivity = sLinkGroupToActivityAndCapacity[gSpecialVar_0x8004];
+        sPlayerActivityGroupSize = sLinkGroupToActivityAndCapacity[gSpecialVar_0x8004] >> 8;
+        SetHostRFUtgtGname(gPlayerCurrActivity, 0, 0);
+        SetWirelessCommType1();
         OpenLink();
-        sub_8011C10(gUnknown_02022C2D & 0xF);
+        InitializeRfuLinkManager_LinkLeader(sPlayerActivityGroupSize & 0xF);
         data->state = 3;
         break;
     case 3:
-        data->field_4 = AllocZeroed(0x70);
-        data->field_0 = AllocZeroed(0xA0);
-        data->field_8 = AllocZeroed(0xA0);
-        sub_80175EC(data->field_4, 4);
-        sub_8017580(data->field_0->arr, 5);
-        sub_800DF90(&data->field_0->arr[0].unk.field_0, data->field_0->arr[0].unk.playerName);
+        data->field_4 = AllocZeroed(4 * sizeof(struct UnkStruct_x1C));
+        data->field_0 = AllocZeroed(5 * sizeof(struct UnkStruct_x20));
+        data->field_8 = AllocZeroed(5 * sizeof(struct UnkStruct_x20));
+        ClearUnkStruct_x1CArray(data->field_4, 4);
+        ClearUnkStruct_x20Array(data->field_0->arr, 5);
+        LinkRfu3_SetGnameUnameFromStaticBuffers(&data->field_0->arr[0].gname_uname.gname, data->field_0->arr[0].gname_uname.playerName);
         data->field_0->arr[0].field_18 = 0;
-        data->field_0->arr[0].field_1A_0 = 1;
+        data->field_0->arr[0].groupScheduledAnim = UNION_ROOM_SPAWN_IN;
         data->field_0->arr[0].field_1A_1 = 0;
         data->field_0->arr[0].field_1B = 0;
-        data->field_17 = sub_8016FC0(data->field_4, 0xFF);
-        data->field_10 = AddWindow(&gUnknown_082F00BC);
-        switch (gUnknown_02022C2D & 0xF)
+        data->listenTaskId = CreateTask_ListenForPartnersWithCompatibleSerialNos(data->field_4, 0xFF);
+        data->bButtonCancelWindowId = AddWindow(&sWindowTemplate_BButtonCancel);
+        switch (sPlayerActivityGroupSize & 0xF)
         {
         case 2:
         case 3:
@@ -266,41 +282,41 @@ void sub_8012780(u8 taskId)
             data->listWindowId = AddWindow(&gUnknown_082F0124);
             break;
         }
-        data->field_11 = AddWindow(&gUnknown_082F012C);
+        data->nPlayerModeWindowId = AddWindow(&sWindowTemplate_NumPlayerMode);
 
-        FillWindowPixelBuffer(data->field_10, PIXEL_FILL(2));
-        sub_80173E0(data->field_10, 0, sText_BButtonCancel, 8, 1, 4);
-        PutWindowTilemap(data->field_10);
-        CopyWindowToVram(data->field_10, 2);
+        FillWindowPixelBuffer(data->bButtonCancelWindowId, PIXEL_FILL(2));
+        UR_AddTextPrinterParameterized(data->bButtonCancelWindowId, 0, sText_BButtonCancel, 8, 1, 4);
+        PutWindowTilemap(data->bButtonCancelWindowId);
+        CopyWindowToVram(data->bButtonCancelWindowId, 2);
 
         DrawStdWindowFrame(data->listWindowId, FALSE);
-        gMultiuseListMenuTemplate = gUnknown_082F015C;
+        gMultiuseListMenuTemplate = sListMenuTemplate_PossibleGroupMembers;
         gMultiuseListMenuTemplate.windowId = data->listWindowId;
         data->listTaskId = ListMenuInit(&gMultiuseListMenuTemplate, 0, 0);
 
-        DrawStdWindowFrame(data->field_11, FALSE);
-        PutWindowTilemap(data->field_11);
-        CopyWindowToVram(data->field_11, 2);
+        DrawStdWindowFrame(data->nPlayerModeWindowId, FALSE);
+        PutWindowTilemap(data->nPlayerModeWindowId);
+        CopyWindowToVram(data->nPlayerModeWindowId, 2);
 
         CopyBgTilemapBufferToVram(0);
-        data->field_13 = 1;
+        data->playerCount = 1;
         data->state = 4;
         break;
     case 4:
-        StringCopy(gStringVar1, sLinkGroupActivityTexts[gUnknown_02022C2C]);
-        if ((gUnknown_02022C2D >> 4) != 0)
+        StringCopy(gStringVar1, sLinkGroupActivityTexts[gPlayerCurrActivity]);
+        if ((sPlayerActivityGroupSize >> 4) != 0)
         {
-            if (data->field_13 > (gUnknown_02022C2D >> 4) - 1 && (gUnknown_02022C2D & 0xF) != 0)
+            if (data->playerCount > (sPlayerActivityGroupSize >> 4) - 1 && (sPlayerActivityGroupSize & 0xF) != 0)
                 StringExpandPlaceholders(gStringVar4, sText_AwaitingLinkPressStart);
             else
                 StringExpandPlaceholders(gStringVar4, sText_AwaitingCommunication);
         }
         else
         {
-            sub_801262C(gStringVar4, gUnknown_02022C2C);
+            StringExpandPlaceholders_AwaitingCommFromAnother(gStringVar4, gPlayerCurrActivity);
         }
 
-        sub_80124EC(data->field_11, gUnknown_02022C2D, data->field_13);
+        PrintNumPlayersWaitingForMsg(data->nPlayerModeWindowId, sPlayerActivityGroupSize, data->playerCount);
         data->state = 5;
         break;
     case 5:
@@ -308,24 +324,24 @@ void sub_8012780(u8 taskId)
             data->state = 6;
         break;
     case 6:
-        sub_801320C(data, 7, 10);
+        Leader_SetStateIfMemberListChanged(data, 7, 10);
         if (gMain.newKeys & B_BUTTON)
         {
-            if (data->field_13 == 1)
+            if (data->playerCount == 1)
                 data->state = 23;
-            else if ((gUnknown_02022C2D & 0xF0) != 0)
+            else if ((sPlayerActivityGroupSize & 0xF0) != 0)
                 data->state = 30;
             else
                 data->state = 19;
         }
-        if ((gUnknown_02022C2D >> 4) != 0
-            && data->field_13 > (gUnknown_02022C2D >> 4) - 1
-            && (gUnknown_02022C2D & 0xF) != 0
+        if ((sPlayerActivityGroupSize >> 4) != 0
+            && data->playerCount > (sPlayerActivityGroupSize >> 4) - 1
+            && (sPlayerActivityGroupSize & 0xF) != 0
             && sub_8012240()
             && gMain.newKeys & START_BUTTON)
         {
             data->state = 15;
-            sub_800EF38();
+            LinkRfu_StopManagerAndFinalizeSlots();
         }
         if (data->state == 6 && sub_80105EC())
         {
@@ -336,20 +352,21 @@ void sub_8012780(u8 taskId)
         if (!sub_80105EC())
         {
             data->state = 6;
-            data->field_13 = sub_8013398(data->field_0);
+            data->playerCount = sub_8013398(data->field_0);
         }
         break;
     case 10:
-        id = ((gUnknown_02022C2C & 0xF) == 2) ? 1 : 0;
+        id = ((gPlayerCurrActivity & 0xF) == 2) ? 1 : 0;
         if (PrintOnTextbox(&data->textState, sPlayerUnavailableTexts[id]))
         {
-            data->field_13 = sub_8013398(data->field_0);
+            data->playerCount = sub_8013398(data->field_0);
             RedrawListMenu(data->listTaskId);
             data->state = 4;
         }
         break;
     case 29:
-        id = ((gUnknown_02022C2D & 0xF) == 2) ? 0 : 1;
+        // Other player canceled.
+        id = ((sPlayerActivityGroupSize & 0xF) == 2) ? 0 : 1;
         if (PrintOnTextbox(&data->textState, sPlayerUnavailableTexts[id]))
         {
             data->state = 21;
@@ -362,19 +379,19 @@ void sub_8012780(u8 taskId)
         }
         break;
     case 11:
-        switch (sub_80170B8(&data->textState, sub_801064C(ReadAsU16(data->field_0->arr[data->field_13].unk.field_0.unk_00.playerTrainerId), data->field_0->arr[data->field_13].unk.playerName)))
+        switch (UnionRoomHandleYesNo(&data->textState, TrainerIdAndNameStillInPartnersList(ReadAsU16(data->field_0->arr[data->playerCount].gname_uname.gname.unk_00.playerTrainerId), data->field_0->arr[data->playerCount].gname_uname.playerName)))
         {
         case 0:
             LoadWirelessStatusIndicatorSpriteGfx();
             CreateWirelessStatusIndicatorSprite(0, 0);
             data->field_19 = 5;
-            sub_8010688(5, ReadAsU16(data->field_0->arr[data->field_13].unk.field_0.unk_00.playerTrainerId), data->field_0->arr[data->field_13].unk.playerName);
+            SendByteToPartnerByIdAndName(5, ReadAsU16(data->field_0->arr[data->playerCount].gname_uname.gname.unk_00.playerTrainerId), data->field_0->arr[data->playerCount].gname_uname.playerName);
             data->state = 12;
             break;
         case 1:
         case -1:
             data->field_19 = 6;
-            sub_8010688(6, ReadAsU16(data->field_0->arr[data->field_13].unk.field_0.unk_00.playerTrainerId), data->field_0->arr[data->field_13].unk.playerName);
+            SendByteToPartnerByIdAndName(6, ReadAsU16(data->field_0->arr[data->playerCount].gname_uname.gname.unk_00.playerTrainerId), data->field_0->arr[data->playerCount].gname_uname.playerName);
             data->state = 12;
             break;
         case -3:
@@ -383,29 +400,29 @@ void sub_8012780(u8 taskId)
         }
         break;
     case 12:
-        val = sub_8010714(ReadAsU16(data->field_0->arr[data->field_13].unk.field_0.unk_00.playerTrainerId), data->field_0->arr[data->field_13].unk.playerName);
+        val = WaitSendByteToPartnerByIdAndName(ReadAsU16(data->field_0->arr[data->playerCount].gname_uname.gname.unk_00.playerTrainerId), data->field_0->arr[data->playerCount].gname_uname.playerName);
         if (val == 1)
         {
             if (data->field_19 == 5)
             {
-                data->field_0->arr[data->field_13].field_1B = 0;
+                data->field_0->arr[data->playerCount].field_1B = 0;
                 RedrawListMenu(data->listTaskId);
-                data->field_13++;
-                if (data->field_13 == (gUnknown_02022C2D & 0xF))
+                data->playerCount++;
+                if (data->playerCount == (sPlayerActivityGroupSize & 0xF))
                 {
-                    if ((gUnknown_02022C2D & 0xF0) != 0 || data->field_13 == 4)
+                    if ((sPlayerActivityGroupSize & 0xF0) != 0 || data->playerCount == 4)
                     {
                         data->state = 15;
                     }
                     else
                     {
-                        sub_8018404(gStringVar1, &data->field_0->arr[data->field_13 - 1]);
+                        IntlConvPartnerUname7(gStringVar1, &data->field_0->arr[data->playerCount - 1]);
                         StringExpandPlaceholders(gStringVar4, sText_AnOKWasSentToPlayer);
                         data->state = 13;
                     }
 
-                    sub_800EF38();
-                    sub_80124EC(data->field_11, gUnknown_02022C2D, data->field_13);
+                    LinkRfu_StopManagerAndFinalizeSlots();
+                    PrintNumPlayersWaitingForMsg(data->nPlayerModeWindowId, sPlayerActivityGroupSize, data->playerCount);
                 }
                 else
                 {
@@ -414,8 +431,8 @@ void sub_8012780(u8 taskId)
             }
             else
             {
-                sub_8011DC0(data->field_0->arr[data->field_13].unk.playerName, ReadAsU16(data->field_0->arr[data->field_13].unk.field_0.unk_00.playerTrainerId));
-                data->field_0->arr[data->field_13].field_1A_0 = 0;
+                RequestDisconnectSlotByTrainerNameAndId(data->field_0->arr[data->playerCount].gname_uname.playerName, ReadAsU16(data->field_0->arr[data->playerCount].gname_uname.gname.unk_00.playerTrainerId));
+                data->field_0->arr[data->playerCount].groupScheduledAnim = UNION_ROOM_SPAWN_NONE;
                 sub_8013398(data->field_0);
                 RedrawListMenu(data->listTaskId);
                 data->state = 4;
@@ -425,7 +442,7 @@ void sub_8012780(u8 taskId)
         }
         else if (val == 2)
         {
-            sub_8011A64(0, 0);
+            RfuSetErrorStatus(0, 0);
             data->state = 4;
         }
         break;
@@ -434,7 +451,7 @@ void sub_8012780(u8 taskId)
             data->state = 14;
         break;
     case 14:
-        if (++data->field_E > 120)
+        if (++data->delayTimerAfterOk > 120)
             data->state = 17;
         break;
     case 15:
@@ -442,14 +459,14 @@ void sub_8012780(u8 taskId)
             data->state = 16;
         break;
     case 16:
-        switch (sub_80170B8(&data->textState, FALSE))
+        switch (UnionRoomHandleYesNo(&data->textState, FALSE))
         {
         case 0:
             data->state = 17;
             break;
         case 1:
         case -1:
-            if ((gUnknown_02022C2D & 0xF0) != 0)
+            if ((sPlayerActivityGroupSize & 0xF0) != 0)
                 data->state = 30;
             else
                 data->state = 19;
@@ -461,16 +478,16 @@ void sub_8012780(u8 taskId)
             data->state = 20;
         break;
     case 20:
-        switch (sub_80170B8(&data->textState, FALSE))
+        switch (UnionRoomHandleYesNo(&data->textState, FALSE))
         {
         case 0:
             data->state = 23;
             break;
         case 1:
         case -1:
-            if ((gUnknown_02022C2D & 0xF0) != 0)
+            if ((sPlayerActivityGroupSize & 0xF0) != 0)
                 data->state = 15;
-            else if (data->field_13 == (gUnknown_02022C2D & 0xF))
+            else if (data->playerCount == (sPlayerActivityGroupSize & 0xF))
                 data->state = 15;
             else
                 data->state = 4;
@@ -478,13 +495,13 @@ void sub_8012780(u8 taskId)
         }
         break;
     case 17:
-        if (!sub_801320C(data, 7, 29))
+        if (!Leader_SetStateIfMemberListChanged(data, 7, 29))
             data->state = 18;
         break;
     case 18:
-        if (sub_800EF1C())
+        if (LmanAcceptSlotFlagIsNotZero())
         {
-            if (sub_800EF58(FALSE))
+            if (WaitRfuState(FALSE))
             {
                 data->state = 26;
             }
@@ -510,8 +527,8 @@ void sub_8012780(u8 taskId)
     case 21:
     case 23:
         DestroyWirelessStatusIndicatorSprite();
-        sub_800EDD4();
-        sub_8012F64(data);
+        LinkRfu_Shutdown();
+        Leader_DestroyResources(data);
         data->state++;
         break;
     case 24:
@@ -525,7 +542,7 @@ void sub_8012780(u8 taskId)
         gSpecialVar_Result = 8;
         break;
     case 26:
-        if (sub_8011A80())
+        if (RfuIsErrorStatus1or2())
         {
             data->state = 29;
         }
@@ -533,11 +550,11 @@ void sub_8012780(u8 taskId)
         {
             if (gReceivedRemoteLinkPlayers != 0)
             {
-                if (sub_80126CC(gUnknown_02022C2C))
+                if (IsActivityWithVariableGroupSize(gPlayerCurrActivity))
                     sub_801103C();
-                sub_8011068(1);
-                sub_80149C4();
-                sub_8012F64(data);
+                UpdateGameData_GroupLockedIn(TRUE);
+                CreateTask_RunScriptAndFadeToActivity();
+                Leader_DestroyResources(data);
                 DestroyTask(taskId);
             }
         }
@@ -545,212 +562,212 @@ void sub_8012780(u8 taskId)
     }
 }
 
-void sub_8012F64(struct UnkStruct_Leader *data)
+static void Leader_DestroyResources(struct WirelessLink_Leader *data)
 {
-    ClearWindowTilemap(data->field_11);
-    ClearStdWindowAndFrame(data->field_11, FALSE);
+    ClearWindowTilemap(data->nPlayerModeWindowId);
+    ClearStdWindowAndFrame(data->nPlayerModeWindowId, FALSE);
     DestroyListMenuTask(data->listTaskId, 0, 0);
-    ClearWindowTilemap(data->field_10);
+    ClearWindowTilemap(data->bButtonCancelWindowId);
     ClearStdWindowAndFrame(data->listWindowId, FALSE);
     CopyBgTilemapBufferToVram(0);
-    RemoveWindow(data->field_11);
+    RemoveWindow(data->nPlayerModeWindowId);
     RemoveWindow(data->listWindowId);
-    RemoveWindow(data->field_10);
-    DestroyTask(data->field_17);
+    RemoveWindow(data->bButtonCancelWindowId);
+    DestroyTask(data->listenTaskId);
 
     Free(data->field_8);
     Free(data->field_0);
     Free(data->field_4);
 }
 
-void sub_8012FC4(u8 *dst, u8 caseId)
+static void Leader_GetAcceptNewMemberPrompt(u8 *dst, u8 caseId)
 {
     switch (caseId)
     {
-    case 1:
-    case 2:
-    case 4:
-    case 14:
-    case 28:
+    case ACTIVITY_BATTLE_SINGLE:
+    case ACTIVITY_BATTLE_DOUBLE:
+    case ACTIVITY_TRADE:
+    case ACTIVITY_BATTLE_TOWER_OPEN:
+    case ACTIVITY_BATTLE_TOWER:
         StringExpandPlaceholders(dst, sText_PlayerContactedYouForXAccept);
         break;
-    case 21:
-    case 22:
+    case ACTIVITY_WONDER_CARD2:
+    case ACTIVITY_WONDER_NEWS2:
         StringExpandPlaceholders(dst, sText_PlayerContactedYouShareX);
         break;
-    case 3:
-    case 9:
-    case 10:
-    case 11:
-    case 15:
-    case 16:
-    case 23:
-    case 24:
-    case 25:
-    case 26:
-    case 27:
+    case ACTIVITY_BATTLE_MULTI:
+    case ACTIVITY_POKEMON_JUMP:
+    case ACTIVITY_BERRY_CRUSH:
+    case ACTIVITY_BERRY_PICK:
+    case ACTIVITY_RECORD_CORNER:
+    case ACTIVITY_BERRY_BLENDER:
+    case ACTIVITY_CONTEST_COOL:
+    case ACTIVITY_CONTEST_BEAUTY:
+    case ACTIVITY_CONTEST_CUTE:
+    case ACTIVITY_CONTEST_SMART:
+    case ACTIVITY_CONTEST_TOUGH:
         StringExpandPlaceholders(dst, sText_PlayerContactedYouAddToMembers);
         break;
     }
 }
 
-void sub_8013078(u8 *dst, u8 caseId)
+static void GetYouDeclinedTheOfferMessage(u8 *dst, u8 caseId)
 {
     switch (caseId)
     {
-    case 65:
-    case 68:
+    case ACTIVITY_BATTLE_SINGLE | IN_UNION_ROOM:
+    case ACTIVITY_TRADE | IN_UNION_ROOM:
         StringExpandPlaceholders(dst, sText_OfferDeclined1);
         break;
-    case 69:
-    case 72:
+    case ACTIVITY_CHAT | IN_UNION_ROOM:
+    case ACTIVITY_CARD | IN_UNION_ROOM:
         StringExpandPlaceholders(dst, sText_OfferDeclined2);
         break;
     }
 }
 
-void sub_80130B4(u8 *dst, u8 caseId)
+static void GetYouAskedToJoinGroupPleaseWaitMessage(u8 *dst, u8 caseId)
 {
     switch (caseId)
     {
-    case 1:
-    case 2:
-    case 4:
-    case 14:
-    case 21:
-    case 22:
-    case 28:
+    case ACTIVITY_BATTLE_SINGLE:
+    case ACTIVITY_BATTLE_DOUBLE:
+    case ACTIVITY_TRADE:
+    case ACTIVITY_BATTLE_TOWER:
+    case ACTIVITY_BATTLE_TOWER_OPEN:
+    case ACTIVITY_WONDER_CARD2:
+    case ACTIVITY_WONDER_NEWS2:
         StringExpandPlaceholders(dst, sText_AwaitingPlayersResponse);
         break;
-    case 3:
-    case 9:
-    case 10:
-    case 11:
-    case 15:
-    case 16:
-    case 23:
-    case 24:
-    case 25:
-    case 26:
-    case 27:
+    case ACTIVITY_BATTLE_MULTI:
+    case ACTIVITY_POKEMON_JUMP:
+    case ACTIVITY_BERRY_CRUSH:
+    case ACTIVITY_BERRY_PICK:
+    case ACTIVITY_RECORD_CORNER:
+    case ACTIVITY_BERRY_BLENDER:
+    case ACTIVITY_CONTEST_COOL:
+    case ACTIVITY_CONTEST_BEAUTY:
+    case ACTIVITY_CONTEST_CUTE:
+    case ACTIVITY_CONTEST_SMART:
+    case ACTIVITY_CONTEST_TOUGH:
         StringExpandPlaceholders(dst, sText_PlayerHasBeenAskedToRegisterYouPleaseWait);
         break;
     }
 }
 
-void sub_8013160(u8 *dst, u8 caseId)
+static void GetGroupLeaderSentAnOKMessage(u8 *dst, u8 caseId)
 {
     switch (caseId)
     {
-    case 1:
-    case 2:
-    case 4:
-    case 14:
-    case 21:
-    case 22:
-    case 28:
+    case ACTIVITY_BATTLE_SINGLE:
+    case ACTIVITY_BATTLE_DOUBLE:
+    case ACTIVITY_TRADE:
+    case ACTIVITY_BATTLE_TOWER:
+    case ACTIVITY_BATTLE_TOWER_OPEN:
+    case ACTIVITY_WONDER_CARD2:
+    case ACTIVITY_WONDER_NEWS2:
         StringExpandPlaceholders(dst, sText_PlayerSentBackOK);
         break;
-    case 3:
-    case 9:
-    case 10:
-    case 11:
-    case 15:
-    case 16:
-    case 23:
-    case 24:
-    case 25:
-    case 26:
-    case 27:
+    case ACTIVITY_BATTLE_MULTI:
+    case ACTIVITY_POKEMON_JUMP:
+    case ACTIVITY_BERRY_CRUSH:
+    case ACTIVITY_BERRY_PICK:
+    case ACTIVITY_RECORD_CORNER:
+    case ACTIVITY_BERRY_BLENDER:
+    case ACTIVITY_CONTEST_COOL:
+    case ACTIVITY_CONTEST_BEAUTY:
+    case ACTIVITY_CONTEST_CUTE:
+    case ACTIVITY_CONTEST_SMART:
+    case ACTIVITY_CONTEST_TOUGH:
         StringExpandPlaceholders(dst, sText_PlayerOKdRegistration);
         break;
     }
 }
 
-bool8 sub_801320C(struct UnkStruct_Leader *data, u32 arg1, u32 arg2)
+static bool8 Leader_SetStateIfMemberListChanged(struct WirelessLink_Leader *data, u32 state1, u32 state2)
 {
-    switch (sub_80132D4(data->field_0))
+    switch (LeaderUpdateGroupMembership(data->field_0))
     {
-    case 1:
+    case UNION_ROOM_SPAWN_IN:
         PlaySE(SE_PC_LOGIN);
         RedrawListMenu(data->listTaskId);
-        sub_8018404(gStringVar2, &data->field_0->arr[data->field_13]);
-        sub_8012FC4(gStringVar4, gUnknown_02022C2C);
-        data->state = arg1;
+        IntlConvPartnerUname7(gStringVar2, &data->field_0->arr[data->playerCount]);
+        Leader_GetAcceptNewMemberPrompt(gStringVar4, gPlayerCurrActivity);
+        data->state = state1;
         break;
-    case 2:
-        sub_8011A64(0, 0);
+    case UNION_ROOM_SPAWN_OUT:
+        RfuSetErrorStatus(0, 0);
         RedrawListMenu(data->listTaskId);
-        data->state = arg2;
+        data->state = state2;
         return TRUE;
     }
 
     return FALSE;
 }
 
-void sub_8013278(u8 arg0, s32 id, u8 arg2)
+static void ItemPrintFunc_PossibleGroupMembers(u8 windowId, s32 id, u8 y)
 {
-    struct UnkStruct_Leader *data = gUnknown_02022C30.leader;
+    struct WirelessLink_Leader *data = sWirelessLinkMain.leader;
     u8 var = 0;
 
-    switch (data->field_0->arr[id].field_1A_0)
+    switch (data->field_0->arr[id].groupScheduledAnim)
     {
-    case 1:
+    case UNION_ROOM_SPAWN_IN:
         if (data->field_0->arr[id].field_1B != 0)
             var = 2;
         break;
-    case 2:
+    case UNION_ROOM_SPAWN_OUT:
         var = 1;
         break;
     }
 
-    sub_80178A0(arg0, 0, arg2, &data->field_0->arr[id], var, id);
+    PrintGroupMemberCandidateOnWindowWithColor(windowId, 0, y, &data->field_0->arr[id], var, id);
 }
 
-u8 sub_80132D4(struct UnkStruct_Main0 *arg0)
+static u8 LeaderUpdateGroupMembership(struct UnkStruct_Main0 *arg0)
 {
-    struct UnkStruct_Leader *data = gUnknown_02022C30.leader;
-    u8 ret = 0;
+    struct WirelessLink_Leader *data = sWirelessLinkMain.leader;
+    u8 ret = UNION_ROOM_SPAWN_NONE;
     u8 i;
     s32 id;
 
     for (i = 1; i < 5; i++)
     {
-        u16 var = data->field_0->arr[i].field_1A_0;
-        if (var == 1)
+        u16 var = data->field_0->arr[i].groupScheduledAnim;
+        if (var == UNION_ROOM_SPAWN_IN)
         {
-            id = sub_80176E4(&data->field_0->arr[i], data->field_4->arr);
+            id = Findx20Inx1CArray(&data->field_0->arr[i], data->field_4->arr);
             if (id != 0xFF)
             {
-                data->field_0->arr[i].unk = data->field_4->arr[id].unk0;
-                data->field_0->arr[i].field_18 = var;
+                data->field_0->arr[i].gname_uname = data->field_4->arr[id].gname_uname;
+                data->field_0->arr[i].field_18 = 1;
             }
             else
             {
-                data->field_0->arr[i].field_1A_0 = 2;
-                ret = 2;
+                data->field_0->arr[i].groupScheduledAnim = UNION_ROOM_SPAWN_OUT;
+                ret = UNION_ROOM_SPAWN_OUT;
             }
         }
     }
 
-    for (id = 0; id < 4; id++)
-        sub_8017734(data->field_0->arr, &data->field_4->arr[id], 5);
+    for (id = 0; id < RFU_CHILD_MAX; id++)
+        Appendx1Ctox20(data->field_0->arr, &data->field_4->arr[id], 5);
 
-    if (ret != 2)
+    if (ret != UNION_ROOM_SPAWN_OUT)
     {
         for (id = 0; id < 5; id++)
         {
             if (data->field_0->arr[id].field_1B != 0)
-                ret = 1;
+                ret = UNION_ROOM_SPAWN_IN;
         }
     }
 
     return ret;
 }
 
-u8 sub_8013398(struct UnkStruct_Main0 *arg0)
+static u8 sub_8013398(struct UnkStruct_Main0 *arg0)
 {
-    struct UnkStruct_Leader *data = gUnknown_02022C30.leader;
+    struct WirelessLink_Leader *data = sWirelessLinkMain.leader;
     u8 copiedCount;
     s32 i;
     u8 ret;
@@ -761,7 +778,7 @@ u8 sub_8013398(struct UnkStruct_Main0 *arg0)
     copiedCount = 0;
     for (i = 0; i < 5; i++)
     {
-        if (data->field_8->arr[i].field_1A_0 == 1)
+        if (data->field_8->arr[i].groupScheduledAnim == UNION_ROOM_SPAWN_IN)
         {
             data->field_0->arr[copiedCount] = data->field_8->arr[i];
             copiedCount++;
@@ -771,16 +788,16 @@ u8 sub_8013398(struct UnkStruct_Main0 *arg0)
     ret = copiedCount;
     for (; copiedCount < 5; copiedCount++)
     {
-        data->field_0->arr[copiedCount].unk = gUnknown_082F045C;
+        data->field_0->arr[copiedCount].gname_uname = sWirelessGnameUnamePair_Dummy;
         data->field_0->arr[copiedCount].field_18 = 0;
-        data->field_0->arr[copiedCount].field_1A_0 = 0;
+        data->field_0->arr[copiedCount].groupScheduledAnim = UNION_ROOM_SPAWN_NONE;
         data->field_0->arr[copiedCount].field_1A_1 = 0;
         data->field_0->arr[copiedCount].field_1B = 0;
     }
 
     for (i = 0; i < 5; i++)
     {
-        if (data->field_0->arr[i].field_1A_0 != 1)
+        if (data->field_0->arr[i].groupScheduledAnim != UNION_ROOM_SPAWN_IN)
             continue;
         if (data->field_0->arr[i].field_1B != 0x40)
             continue;
@@ -795,34 +812,34 @@ u8 sub_8013398(struct UnkStruct_Main0 *arg0)
 void TryJoinLinkGroup(void)
 {
     u8 taskId;
-    struct UnkStruct_Group *dataPtr;
+    struct WirelessLink_Group *data;
 
-    taskId = CreateTask(sub_80134E8, 0);
-    gUnknown_02022C30.group = dataPtr = (void*)(gTasks[taskId].data);
-    gUnknown_03000DA4 = dataPtr;
+    taskId = CreateTask(Task_TryJoinLinkGroup, 0);
+    sWirelessLinkMain.group = data = (void*)(gTasks[taskId].data);
+    sGroup = data;
 
-    dataPtr->state = 0;
-    dataPtr->textState = 0;
+    data->state = 0;
+    data->textState = 0;
     gSpecialVar_Result = 0;
 }
 
-void sub_80134E8(u8 taskId)
+static void Task_TryJoinLinkGroup(u8 taskId)
 {
     s32 id;
-    struct UnkStruct_Group *data = gUnknown_02022C30.group;
+    struct WirelessLink_Group *data = sWirelessLinkMain.group;
 
     switch (data->state)
     {
     case 0:
         if (gSpecialVar_0x8004 == LINK_GROUP_BATTLE_TOWER && gSaveBlock2Ptr->frontier.lvlMode == FRONTIER_LVL_OPEN)
             gSpecialVar_0x8004++;
-        gUnknown_02022C2C = gUnknown_082F0530[gSpecialVar_0x8004];
-        sub_8010F84(gUnknown_02022C2C, 0, 0);
-        sub_800B488();
+        gPlayerCurrActivity = sLinkGroupToURoomActivity[gSpecialVar_0x8004];
+        SetHostRFUtgtGname(gPlayerCurrActivity, 0, 0);
+        SetWirelessCommType1();
         OpenLink();
-        sub_8011C5C();
-        data->field_4 = AllocZeroed(0x70);
-        data->field_0 = AllocZeroed(0x200);
+        InitializeRfuLinkManager_JoinGroup();
+        data->field_4 = AllocZeroed(4 * sizeof(struct UnkStruct_x1C));
+        data->field_0 = AllocZeroed(16 * sizeof(struct UnkStruct_x20));
         data->state = 1;
         break;
     case 1:
@@ -830,34 +847,34 @@ void sub_80134E8(u8 taskId)
             data->state = 2;
         break;
     case 2:
-        sub_80175EC(data->field_4, 4);
-        sub_8017580(data->field_0->arr, 16);
-        data->field_11 = sub_8016FC0(data->field_4, gSpecialVar_0x8004);
-        data->field_C = AddWindow(&gUnknown_082F00BC);
+        ClearUnkStruct_x1CArray(data->field_4, 4);
+        ClearUnkStruct_x20Array(data->field_0->arr, 16);
+        data->listenTaskId = CreateTask_ListenForPartnersWithCompatibleSerialNos(data->field_4, gSpecialVar_0x8004);
+        data->bButtonCancelWindowId = AddWindow(&sWindowTemplate_BButtonCancel);
         data->listWindowId = AddWindow(&gUnknown_082F0174);
-        data->field_D = AddWindow(&gUnknown_082F017C);
+        data->playerNameAndIdWindowId = AddWindow(&gUnknown_082F017C);
 
-        FillWindowPixelBuffer(data->field_C, PIXEL_FILL(2));
-        sub_80173E0(data->field_C, 0, sText_ChooseJoinCancel, 8, 1, 4);
-        PutWindowTilemap(data->field_C);
-        CopyWindowToVram(data->field_C, 2);
+        FillWindowPixelBuffer(data->bButtonCancelWindowId, PIXEL_FILL(2));
+        UR_AddTextPrinterParameterized(data->bButtonCancelWindowId, 0, sText_ChooseJoinCancel, 8, 1, 4);
+        PutWindowTilemap(data->bButtonCancelWindowId);
+        CopyWindowToVram(data->bButtonCancelWindowId, 2);
 
         DrawStdWindowFrame(data->listWindowId, FALSE);
-        gMultiuseListMenuTemplate = gUnknown_082F0204;
+        gMultiuseListMenuTemplate = sListMenuTemplate_UnionRoomGroups;
         gMultiuseListMenuTemplate.windowId = data->listWindowId;
         data->listTaskId = ListMenuInit(&gMultiuseListMenuTemplate, 0, 0);
 
-        DrawStdWindowFrame(data->field_D, FALSE);
-        PutWindowTilemap(data->field_D);
-        sub_80125BC(data->field_D);
-        CopyWindowToVram(data->field_D, 2);
+        DrawStdWindowFrame(data->playerNameAndIdWindowId, FALSE);
+        PutWindowTilemap(data->playerNameAndIdWindowId);
+        PrintPlayerNameAndIdOnWindow(data->playerNameAndIdWindowId);
+        CopyWindowToVram(data->playerNameAndIdWindowId, 2);
 
         CopyBgTilemapBufferToVram(0);
-        data->field_F = 0;
+        data->leaderId = 0;
         data->state = 3;
         break;
     case 3:
-        id = sub_8013E44();
+        id = GetNewLeaderCandidate();
         switch (id)
         {
         case 1:
@@ -870,14 +887,14 @@ void sub_80134E8(u8 taskId)
             {
                 // this unused variable along with the assignment is needed to match
                 u32 unusedVar;
-                unusedVar  = data->field_0->arr[id].unk.field_0.activity;
+                unusedVar  = data->field_0->arr[id].gname_uname.gname.activity;
 
-                if (data->field_0->arr[id].field_1A_0 == 1 && !data->field_0->arr[id].unk.field_0.started)
+                if (data->field_0->arr[id].groupScheduledAnim == UNION_ROOM_SPAWN_IN && !data->field_0->arr[id].gname_uname.gname.started)
                 {
-                    u32 var = sub_8013B8C(data, id);
+                    u32 var = IsTryingToTradeAcrossVersionTooSoon(data, id);
                     if (var == 0)
                     {
-                        sub_8013BD8(data, id);
+                        AskToJoinRfuGroup(data, id);
                         data->state = 5;
                         PlaySE(SE_PN_ON);
                     }
@@ -904,30 +921,46 @@ void sub_80134E8(u8 taskId)
         }
         break;
     case 5:
-        sub_80130B4(gStringVar4, gUnknown_02022C2C);
+        GetYouAskedToJoinGroupPleaseWaitMessage(gStringVar4, gPlayerCurrActivity);
         if (PrintOnTextbox(&data->textState, gStringVar4))
         {
-            sub_8018404(gStringVar1, &data->field_0->arr[data->field_F]);
+            IntlConvPartnerUname7(gStringVar1, &data->field_0->arr[data->leaderId]);
             data->state = 6;
         }
         break;
     case 6:
-        if (gReceivedRemoteLinkPlayers != 0)
+        if (gReceivedRemoteLinkPlayers)
         {
-            gUnknown_02022C2C = data->field_0->arr[data->field_F].unk.field_0.activity;
-            sub_8011A64(0, 0);
-            switch (gUnknown_02022C2C)
+            gPlayerCurrActivity = data->field_0->arr[data->leaderId].gname_uname.gname.activity;
+            RfuSetErrorStatus(0, 0);
+            switch (gPlayerCurrActivity)
             {
-            case 1 ... 5:
-            case 9 ... 11:
-            case 13 ... 16:
-            case 21 ... 28:
+            case ACTIVITY_BATTLE_SINGLE:
+            case ACTIVITY_BATTLE_DOUBLE:
+            case ACTIVITY_BATTLE_MULTI:
+            case ACTIVITY_TRADE:
+            case ACTIVITY_CHAT:
+            case ACTIVITY_POKEMON_JUMP:
+            case ACTIVITY_BERRY_CRUSH:
+            case ACTIVITY_BERRY_PICK:
+            case ACTIVITY_SPIN_TRADE:
+            case ACTIVITY_BATTLE_TOWER:
+            case ACTIVITY_BATTLE_TOWER_OPEN:
+            case ACTIVITY_RECORD_CORNER:
+            case ACTIVITY_BERRY_BLENDER:
+            case ACTIVITY_WONDER_CARD2:
+            case ACTIVITY_WONDER_NEWS2:
+            case ACTIVITY_CONTEST_COOL:
+            case ACTIVITY_CONTEST_BEAUTY:
+            case ACTIVITY_CONTEST_CUTE:
+            case ACTIVITY_CONTEST_SMART:
+            case ACTIVITY_CONTEST_TOUGH:
                 data->state = 20;
                 return;
             }
         }
 
-        switch (sub_8011A74())
+        switch (RfuGetErrorStatus())
         {
         case 1:
             data->state = 12;
@@ -938,49 +971,49 @@ void sub_80134E8(u8 taskId)
             data->state = 14;
             break;
         case 5:
-            sub_8013160(gStringVar4, gUnknown_02022C2C);
+            GetGroupLeaderSentAnOKMessage(gStringVar4, gPlayerCurrActivity);
             if (PrintOnTextbox(&data->textState, gStringVar4))
             {
-                if (gUnknown_02022C2C == 28 || gUnknown_02022C2C == 14)
+                if (gPlayerCurrActivity == ACTIVITY_BATTLE_TOWER || gPlayerCurrActivity == ACTIVITY_BATTLE_TOWER_OPEN)
                 {
-                    sub_8011A64(12, 0);
+                    RfuSetErrorStatus(12, 0);
                 }
                 else
                 {
-                    sub_8011A64(7, 0);
-                    StringCopy(gStringVar1, sLinkGroupActivityTexts[gUnknown_02022C2C]);
+                    RfuSetErrorStatus(7, 0);
+                    StringCopy(gStringVar1, sLinkGroupActivityTexts[gPlayerCurrActivity]);
                     StringExpandPlaceholders(gStringVar4, sText_AwaitingOtherMembers);
                 }
             }
             break;
         case 7:
-            if (data->field_15 > 0xF0)
+            if (data->delayBeforePrint > 240)
             {
                 if (PrintOnTextbox(&data->textState, gStringVar4))
                 {
-                    sub_8011A64(12, 0);
-                    data->field_15 = 0;
+                    RfuSetErrorStatus(12, 0);
+                    data->delayBeforePrint = 0;
                 }
             }
             else
             {
-                switch (gUnknown_02022C2C)
+                switch (gPlayerCurrActivity)
                 {
-                case 1:
-                case 2:
-                case 4:
-                case 14:
-                case 28:
+                case ACTIVITY_BATTLE_SINGLE:
+                case ACTIVITY_BATTLE_DOUBLE:
+                case ACTIVITY_TRADE:
+                case ACTIVITY_BATTLE_TOWER:
+                case ACTIVITY_BATTLE_TOWER_OPEN:
                     break;
                 default:
-                    data->field_15++;
+                    data->delayBeforePrint++;
                     break;
                 }
             }
             break;
         }
 
-        if (!sub_8011A74() && gMain.newKeys & B_BUTTON)
+        if (!RfuGetErrorStatus() && gMain.newKeys & B_BUTTON)
             data->state = 7;
         break;
     case 7:
@@ -988,10 +1021,10 @@ void sub_80134E8(u8 taskId)
             data->state = 8;
         break;
     case 8:
-        switch (sub_80170B8(&data->textState, sub_8011A74()))
+        switch (UnionRoomHandleYesNo(&data->textState, RfuGetErrorStatus()))
         {
         case 0:
-            sub_80106D4();
+            LinkRfuNIsend8();
             data->state = 9;
             RedrawListMenu(data->listTaskId);
             break;
@@ -1007,7 +1040,7 @@ void sub_80134E8(u8 taskId)
         }
         break;
     case 9:
-        if (sub_8011A74())
+        if (RfuGetErrorStatus())
             data->state = 6;
         break;
     case 10:
@@ -1015,23 +1048,23 @@ void sub_80134E8(u8 taskId)
     case 14:
     case 18:
     case 20:
-        ClearWindowTilemap(data->field_D);
-        ClearStdWindowAndFrame(data->field_D, FALSE);
+        ClearWindowTilemap(data->playerNameAndIdWindowId);
+        ClearStdWindowAndFrame(data->playerNameAndIdWindowId, FALSE);
         DestroyListMenuTask(data->listTaskId, 0, 0);
-        ClearWindowTilemap(data->field_C);
+        ClearWindowTilemap(data->bButtonCancelWindowId);
         ClearStdWindowAndFrame(data->listWindowId, FALSE);
         CopyBgTilemapBufferToVram(0);
-        RemoveWindow(data->field_D);
+        RemoveWindow(data->playerNameAndIdWindowId);
         RemoveWindow(data->listWindowId);
-        RemoveWindow(data->field_C);
-        DestroyTask(data->field_11);
+        RemoveWindow(data->bButtonCancelWindowId);
+        DestroyTask(data->listenTaskId);
         Free(data->field_0);
         Free(data->field_4);
         data->state++;
         break;
     case 13:
         DestroyWirelessStatusIndicatorSprite();
-        if (PrintOnTextbox(&data->textState, sPlayerDisconnectedTexts[sub_8011A74()]))
+        if (PrintOnTextbox(&data->textState, sPlayerDisconnectedTexts[RfuGetErrorStatus()]))
         {
             gSpecialVar_Result = 6;
             data->state = 23;
@@ -1044,7 +1077,7 @@ void sub_80134E8(u8 taskId)
         break;
     case 15:
         DestroyWirelessStatusIndicatorSprite();
-        if (PrintOnTextbox(&data->textState, sPlayerDisconnectedTexts[sub_8011A74()]))
+        if (PrintOnTextbox(&data->textState, sPlayerDisconnectedTexts[RfuGetErrorStatus()]))
         {
             gSpecialVar_Result = 8;
             data->state = 23;
@@ -1059,25 +1092,25 @@ void sub_80134E8(u8 taskId)
         break;
     case 23:
         DestroyTask(taskId);
-        sub_80173D4();
-        sub_800EDD4();
+        JoinGroup_EnableScriptContexts();
+        LinkRfu_Shutdown();
         break;
     case 21:
-        sub_80149C4();
+        CreateTask_RunScriptAndFadeToActivity();
         DestroyTask(taskId);
         break;
     }
 }
 
-u32 sub_8013B8C(struct UnkStruct_Group *arg0, s32 id)
+static u32 IsTryingToTradeAcrossVersionTooSoon(struct WirelessLink_Group *data, s32 id)
 {
-    struct UnkStruct_x20 *structPtr = &arg0->field_0->arr[id];
+    struct UnkStruct_x20 *structPtr = &data->field_0->arr[id];
 
-    if (gUnknown_02022C2C == 4 && structPtr->unk.field_0.unk_00.version != VERSION_EMERALD)
+    if (gPlayerCurrActivity == ACTIVITY_TRADE && structPtr->gname_uname.gname.unk_00.version != VERSION_EMERALD)
     {
         if (!(gSaveBlock2Ptr->specialSaveWarpFlags & CHAMPION_SAVEWARP))
             return 1;
-        else if (structPtr->unk.field_0.unk_00.isChampion)
+        else if (structPtr->gname_uname.gname.unk_00.isChampion)
             return 0;
     }
     else
@@ -1088,88 +1121,88 @@ u32 sub_8013B8C(struct UnkStruct_Group *arg0, s32 id)
     return 2;
 }
 
-void sub_8013BD8(struct UnkStruct_Group *data, s32 id)
+static void AskToJoinRfuGroup(struct WirelessLink_Group *data, s32 id)
 {
-    data->field_F = id;
+    data->leaderId = id;
     LoadWirelessStatusIndicatorSpriteGfx();
     CreateWirelessStatusIndicatorSprite(0, 0);
     RedrawListMenu(data->listTaskId);
-    sub_8018404(gStringVar1, &data->field_0->arr[data->field_F]);
-    sub_8011090(gUnknown_082F0530[gSpecialVar_0x8004], 0, 1);
-    sub_8011FC8(data->field_0->arr[data->field_F].unk.playerName, ReadAsU16(data->field_0->arr[data->field_F].unk.field_0.unk_00.playerTrainerId));
+    IntlConvPartnerUname7(gStringVar1, &data->field_0->arr[data->leaderId]);
+    UpdateGameDataWithActivitySpriteGendersFlag(sLinkGroupToURoomActivity[gSpecialVar_0x8004], 0, 1);
+    CreateTask_RfuReconnectWithParent(data->field_0->arr[data->leaderId].gname_uname.playerName, ReadAsU16(data->field_0->arr[data->leaderId].gname_uname.gname.unk_00.playerTrainerId));
 }
 
-u8 sub_8013C40(void)
+u8 CreateTask_ListenToWireless(void)
 {
     u8 taskId;
-    struct UnkStruct_Group *dataPtr;
+    struct WirelessLink_Group *data;
 
-    taskId = CreateTask(sub_8013C7C, 0);
-    gUnknown_02022C30.group = dataPtr = (void*)(gTasks[taskId].data);
+    taskId = CreateTask(Task_ListenToWireless, 0);
+    sWirelessLinkMain.group = data = (void*)(gTasks[taskId].data);
 
-    dataPtr->state = 0;
-    dataPtr->textState = 0;
+    data->state = 0;
+    data->textState = 0;
 
-    gUnknown_03000DA4 = dataPtr;
+    sGroup = data;
 
     return taskId;
 }
 
-void sub_8013C7C(u8 taskId)
+static void Task_ListenToWireless(u8 taskId)
 {
-    struct UnkStruct_Group *data = gUnknown_02022C30.group;
+    struct WirelessLink_Group *data = sWirelessLinkMain.group;
 
     switch (data->state)
     {
     case 0:
-        sub_8010F84(0, 0, 0);
-        sub_800B488();
+        SetHostRFUtgtGname(0, 0, 0);
+        SetWirelessCommType1();
         OpenLink();
-        sub_8011C5C();
+        InitializeRfuLinkManager_JoinGroup();
         sub_80111B0(TRUE);
-        data->field_4 = AllocZeroed(0x70);
-        data->field_0 = AllocZeroed(0x200);
+        data->field_4 = AllocZeroed(4 * sizeof(struct UnkStruct_x1C));
+        data->field_0 = AllocZeroed(16 * sizeof(struct UnkStruct_x20));
         data->state = 2;
         break;
     case 2:
-        sub_80175EC(data->field_4, 4);
-        sub_8017580(data->field_0->arr, 16);
-        data->field_11 = sub_8016FC0(data->field_4, 0xFF);
-        data->field_F = 0;
+        ClearUnkStruct_x1CArray(data->field_4, 4);
+        ClearUnkStruct_x20Array(data->field_0->arr, 16);
+        data->listenTaskId = CreateTask_ListenForPartnersWithCompatibleSerialNos(data->field_4, 0xFF);
+        data->leaderId = 0;
         data->state = 3;
         break;
     case 3:
-        if (sub_8013E44() == 1)
+        if (GetNewLeaderCandidate() == 1)
             PlaySE(SE_PC_LOGIN);
         if (gTasks[taskId].data[15] == 0xFF)
             data->state = 10;
         break;
     case 10:
-        DestroyTask(data->field_11);
+        DestroyTask(data->listenTaskId);
         Free(data->field_0);
         Free(data->field_4);
-        sub_800EDD4();
+        LinkRfu_Shutdown();
         data->state++;
         break;
     case 11:
-        sub_800EDD4();
+        LinkRfu_Shutdown();
         DestroyTask(taskId);
         break;
     }
 }
 
-bool32 sub_8013D88(u32 arg0, u32 id)
+static bool32 IsPartnerActivityAcceptable(u32 activity, u32 group)
 {
-    if (id == 0xFF)
+    if (group == 0xFF)
         return TRUE;
 
-    if (id <= ARRAY_COUNT(gUnknown_082F04D8)) // UB: <= may access data outside the array
+    if (group <= ARRAY_COUNT(sAcceptedActivityIds)) // UB: <= may access data outside the array
     {
-        const u8 *bytes = gUnknown_082F04D8[id];
+        const u8 *bytes = sAcceptedActivityIds[group];
 
         while ((*(bytes) != 0xFF))
         {
-            if ((*bytes) == arg0)
+            if ((*bytes) == activity)
                 return TRUE;
             bytes++;
         }
@@ -1178,49 +1211,49 @@ bool32 sub_8013D88(u32 arg0, u32 id)
     return FALSE;
 }
 
-u8 sub_8013DBC(struct UnkStruct_Group *data, u32 id)
+static u8 URoomGroupListGetTextColor(struct WirelessLink_Group *data, u32 id)
 {
-    if (data->field_0->arr[id].field_1A_0 == 1)
+    if (data->field_0->arr[id].groupScheduledAnim == UNION_ROOM_SPAWN_IN)
     {
-        if (data->field_0->arr[id].unk.field_0.started)
-            return 3;
+        if (data->field_0->arr[id].gname_uname.gname.started)
+            return UR_COLOR_WHT_WHT_LTE;
         else if (data->field_0->arr[id].field_1A_1 != 0)
-            return 1;
+            return UR_COLOR_RED_WHT_LTR;
         else if (data->field_0->arr[id].field_1B != 0)
-            return 2;
+            return UR_COLOR_GRN_WHT_LTG;
     }
 
-    return 0;
+    return UR_COLOR_DKE_WHT_LTE;
 }
 
-void sub_8013DF4(u8 arg0, s32 id, u8 arg2)
+static void ListMenuItemPrintFunc_UnionRoomGroups(u8 windowId, s32 id, u8 y)
 {
-    struct UnkStruct_Group *data = gUnknown_02022C30.group;
-    u8 var = sub_8013DBC(data, id);
+    struct WirelessLink_Group *data = sWirelessLinkMain.group;
+    u8 colorId = URoomGroupListGetTextColor(data, id);
 
-    sub_80177B8(arg0, 8, arg2, &data->field_0->arr[id], var, id);
+    PrintUnionRoomGroupOnWindow(windowId, 8, y, &data->field_0->arr[id], colorId, id);
 }
 
-u8 sub_8013E44(void)
+static u8 GetNewLeaderCandidate(void)
 {
-    struct UnkStruct_Group *data = gUnknown_02022C30.group;
+    struct WirelessLink_Group *data = sWirelessLinkMain.group;
     u8 ret = 0;
     u8 i;
     s32 id;
 
     for (i = 0; i < 16; i++)
     {
-        if (data->field_0->arr[i].field_1A_0 != 0)
+        if (data->field_0->arr[i].groupScheduledAnim != UNION_ROOM_SPAWN_NONE)
         {
-            id = sub_80176E4(&data->field_0->arr[i], data->field_4->arr);
+            id = Findx20Inx1CArray(&data->field_0->arr[i], data->field_4->arr);
             if (id != 0xFF)
             {
-                if (data->field_0->arr[i].field_1A_0 == 1)
+                if (data->field_0->arr[i].groupScheduledAnim == UNION_ROOM_SPAWN_IN)
                 {
-                    if (sub_8017678(&data->field_0->arr[i].unk, &data->field_4->arr[id].unk0))
+                    if (AreUnionRoomPlayerGnamesDifferent(&data->field_0->arr[i].gname_uname, &data->field_4->arr[id].gname_uname))
                     {
-                        data->field_0->arr[i].unk = data->field_4->arr[id].unk0;
-                        data->field_0->arr[i].field_1B = 0x40;
+                        data->field_0->arr[i].gname_uname = data->field_4->arr[id].gname_uname;
+                        data->field_0->arr[i].field_1B = 64;
                         ret = 1;
                     }
                     else
@@ -1235,8 +1268,8 @@ u8 sub_8013E44(void)
                 }
                 else
                 {
-                    data->field_0->arr[i].field_1A_0 = 1;
-                    data->field_0->arr[i].field_1B = 0x40;
+                    data->field_0->arr[i].groupScheduledAnim = UNION_ROOM_SPAWN_IN;
+                    data->field_0->arr[i].field_1B = 64;
                     ret = 1;
                 }
 
@@ -1244,12 +1277,12 @@ u8 sub_8013E44(void)
             }
             else
             {
-                if (data->field_0->arr[i].field_1A_0 != 2)
+                if (data->field_0->arr[i].groupScheduledAnim != UNION_ROOM_SPAWN_OUT)
                 {
                     data->field_0->arr[i].field_18++;
                     if (data->field_0->arr[i].field_18 >= 300)
                     {
-                        data->field_0->arr[i].field_1A_0 = 2;
+                        data->field_0->arr[i].groupScheduledAnim = UNION_ROOM_SPAWN_OUT;
                         ret = 2;
                     }
                 }
@@ -1257,29 +1290,29 @@ u8 sub_8013E44(void)
         }
     }
 
-    for (id = 0; id < 4; id++)
+    for (id = 0; id < RFU_CHILD_MAX; id++)
     {
-        if (sub_8017734(data->field_0->arr, &data->field_4->arr[id], 16) != 0xFF)
+        if (Appendx1Ctox20(data->field_0->arr, &data->field_4->arr[id], 16) != 0xFF)
             ret = 1;
     }
 
     return ret;
 }
 
-static void Task_CreateTradeMenu(u8 taskId)
+static void Task_ReturnFromLinkTrade(u8 taskId)
 {
     CB2_StartCreateTradeMenu();
     DestroyTask(taskId);
 }
 
-u8 sub_8013F78(void)
+u8 CreateTask_ReturnFromLinkTrade(void)
 {
-    u8 taskId = CreateTask(Task_CreateTradeMenu, 0);
+    u8 taskId = CreateTask(Task_ReturnFromLinkTrade, 0);
 
     return taskId;
 }
 
-void sub_8013F90(u8 taskId)
+static void Task_StartUnionRoomTrade(u8 taskId)
 {
     u32 monId = GetPartyPositionOfRegisteredMon(&sUnionRoomTrade, GetMultiplayerId());
 
@@ -1319,7 +1352,7 @@ void sub_8013F90(u8 taskId)
     }
 }
 
-void sub_80140E0(u8 taskId)
+static void Task_ExchangeCards(u8 taskId)
 {
     switch (gTasks[taskId].data[0])
     {
@@ -1343,11 +1376,11 @@ void sub_80140E0(u8 taskId)
             if (GetLinkPlayerCount() == 2)
             {
                 recvBuff = gBlockRecvBuffer[GetMultiplayerId() ^ 1];
-                sub_801B94C(recvBuff[48]);
+                MEventHandleReceivedWonderCard(recvBuff[48]);
             }
             else
             {
-                sub_801B940();
+                ResetReceivedWonderCardFlag();
             }
 
             ResetBlockReceivedFlags();
@@ -1357,16 +1390,16 @@ void sub_80140E0(u8 taskId)
     }
 }
 
-void sub_80141A4(void)
+static void CB2_ShowCard(void)
 {
     switch (gMain.state)
     {
     case 0:
-        CreateTask(sub_80140E0, 5);
+        CreateTask(Task_ExchangeCards, 5);
         gMain.state++;
         break;
     case 1:
-        if (!FuncIsActiveTask(sub_80140E0))
+        if (!FuncIsActiveTask(Task_ExchangeCards))
             ShowTrainerCardInLink(GetMultiplayerId() ^ 1, CB2_ReturnToField);
         break;
     }
@@ -1377,7 +1410,7 @@ void sub_80141A4(void)
     BuildOamBuffer();
 }
 
-void sub_8014210(u16 battleFlags)
+void StartUnionRoomBattle(u16 battleFlags)
 {
     HealPlayerParty();
     SavePlayerParty();
@@ -1385,11 +1418,12 @@ void sub_8014210(u16 battleFlags)
     gLinkPlayers[0].linkType = LINKTYPE_BATTLE;
     gLinkPlayers[GetMultiplayerId()].id = GetMultiplayerId();
     gLinkPlayers[GetMultiplayerId() ^ 1].id = GetMultiplayerId() ^ 1;
-    gMain.savedCallback = sub_80B360C;
+    gMain.savedCallback = CB2_ReturnFromCableClubBattle;
     gBattleTypeFlags = battleFlags;
     PlayBattleBGM();
 }
 
+// TODO: pokefirered bad name
 static void sub_8014290(u16 linkService, u16 x, u16 y)
 {
     VarSet(VAR_CABLE_CLUB_STATE, linkService);
@@ -1398,7 +1432,8 @@ static void sub_8014290(u16 linkService, u16 x, u16 y)
     WarpIntoMap();
 }
 
-void sub_8014304(s8 mapGroup, s8 mapNum, s32 x, s32 y, u16 linkService)
+// TODO: pokefirered bad name
+static void sub_8014304(s8 mapGroup, s8 mapNum, s32 x, s32 y, u16 linkService)
 {
     gSpecialVar_0x8004 = linkService;
     VarSet(VAR_CABLE_CLUB_STATE, linkService);
@@ -1409,16 +1444,16 @@ void sub_8014304(s8 mapGroup, s8 mapNum, s32 x, s32 y, u16 linkService)
     WarpIntoMap();
 }
 
-void sub_8014384(void)
+static void CB2_TransitionToCableClub(void)
 {
     switch (gMain.state)
     {
     case 0:
-        CreateTask(sub_80140E0, 5);
+        CreateTask(Task_ExchangeCards, 5);
         gMain.state++;
         break;
     case 1:
-        if (!FuncIsActiveTask(sub_80140E0))
+        if (!FuncIsActiveTask(Task_ExchangeCards))
             SetMainCallback2(CB2_ReturnToFieldCableClub);
         break;
     }
@@ -1429,120 +1464,125 @@ void sub_8014384(void)
     BuildOamBuffer();
 }
 
-void sub_80143E4(void *arg0, bool32 arg1)
+static void CreateTrainerCardInBuffer(void *dest, bool32 setWonderCard)
 {
-    u16 *argAsU16Ptr = arg0;
+    u16 *argAsU16Ptr = dest;
 
     TrainerCard_GenerateCardForPlayer((struct TrainerCard *)argAsU16Ptr);
-    if (arg1)
+    if (setWonderCard)
         argAsU16Ptr[48] = GetWonderCardFlagID();
     else
         argAsU16Ptr[48] = 0;
 }
 
-void sub_801440C(u8 taskId)
+static void Task_StartActivity(u8 taskId)
 {
-    sub_801B940();
-    switch (gUnknown_02022C2C)
+    ResetReceivedWonderCardFlag();
+    switch (gPlayerCurrActivity)
     {
-    case 1 ... 4:
-    case 9 ... 11:
-    case 13:
-    case 15:
+    case ACTIVITY_BATTLE_SINGLE:
+    case ACTIVITY_BATTLE_DOUBLE:
+    case ACTIVITY_BATTLE_MULTI:
+    case ACTIVITY_TRADE:
+    case ACTIVITY_POKEMON_JUMP:
+    case ACTIVITY_BERRY_CRUSH:
+    case ACTIVITY_BERRY_PICK:
+    case ACTIVITY_SPIN_TRADE:
+    case ACTIVITY_RECORD_CORNER:
         RecordMixTrainerNames();
         break;
     }
 
-    switch (gUnknown_02022C2C)
+    switch (gPlayerCurrActivity)
     {
-    case 65:
-    case 81:
+    case ACTIVITY_BATTLE_SINGLE | IN_UNION_ROOM:
+    case ACTIVITY_ACCEPT | IN_UNION_ROOM:
         CleanupOverworldWindowsAndTilemaps();
-        gMain.savedCallback = sub_801AC54;
+        gMain.savedCallback = CB2_UnionRoomBattle;
         InitChooseHalfPartyForBattle(3);
         break;
-    case 1:
+    case ACTIVITY_BATTLE_SINGLE:
         CleanupOverworldWindowsAndTilemaps();
-        sub_80143E4(gBlockSendBuffer, TRUE);
+        CreateTrainerCardInBuffer(gBlockSendBuffer, TRUE);
         HealPlayerParty();
         SavePlayerParty();
         LoadPlayerBag();
         sub_8014304(MAP_GROUP(BATTLE_COLOSSEUM_2P), MAP_NUM(BATTLE_COLOSSEUM_2P), 6, 8, USING_SINGLE_BATTLE);
-        SetMainCallback2(sub_8014384);
+        SetMainCallback2(CB2_TransitionToCableClub);
         break;
-    case 2:
+    case ACTIVITY_BATTLE_DOUBLE:
         CleanupOverworldWindowsAndTilemaps();
         HealPlayerParty();
         SavePlayerParty();
         LoadPlayerBag();
-        sub_80143E4(gBlockSendBuffer, TRUE);
+        CreateTrainerCardInBuffer(gBlockSendBuffer, TRUE);
         sub_8014304(MAP_GROUP(BATTLE_COLOSSEUM_2P), MAP_NUM(BATTLE_COLOSSEUM_2P), 6, 8, USING_DOUBLE_BATTLE);
-        SetMainCallback2(sub_8014384);
+        SetMainCallback2(CB2_TransitionToCableClub);
         break;
-    case 3:
+    case ACTIVITY_BATTLE_MULTI:
         CleanupOverworldWindowsAndTilemaps();
         HealPlayerParty();
         SavePlayerParty();
         LoadPlayerBag();
-        sub_80143E4(gBlockSendBuffer, TRUE);
+        CreateTrainerCardInBuffer(gBlockSendBuffer, TRUE);
         sub_8014304(MAP_GROUP(BATTLE_COLOSSEUM_4P), MAP_NUM(BATTLE_COLOSSEUM_4P), 5, 8, USING_MULTI_BATTLE);
-        SetMainCallback2(sub_8014384);
+        SetMainCallback2(CB2_TransitionToCableClub);
         break;
-    case 4:
-        sub_80143E4(gBlockSendBuffer, TRUE);
+    case ACTIVITY_TRADE:
+        CreateTrainerCardInBuffer(gBlockSendBuffer, TRUE);
         CleanupOverworldWindowsAndTilemaps();
         sub_8014304(MAP_GROUP(TRADE_CENTER), MAP_NUM(TRADE_CENTER), 5, 8, USING_TRADE_CENTER);
-        SetMainCallback2(sub_8014384);
+        SetMainCallback2(CB2_TransitionToCableClub);
         break;
-    case 15:
-        sub_80143E4(gBlockSendBuffer, TRUE);
+    case ACTIVITY_RECORD_CORNER:
+        CreateTrainerCardInBuffer(gBlockSendBuffer, TRUE);
         CleanupOverworldWindowsAndTilemaps();
         sub_8014304(MAP_GROUP(RECORD_CORNER), MAP_NUM(RECORD_CORNER), 8, 9, USING_RECORD_CORNER);
-        SetMainCallback2(sub_8014384);
+        SetMainCallback2(CB2_TransitionToCableClub);
         break;
-    case 68:
+    case ACTIVITY_TRADE | IN_UNION_ROOM:
         CleanupOverworldWindowsAndTilemaps();
-        CreateTask(sub_8013F90, 0);
+        CreateTask(Task_StartUnionRoomTrade, 0);
         break;
-    case 5:
-    case 69:
+    case ACTIVITY_CHAT:
+    case ACTIVITY_CHAT | IN_UNION_ROOM:
         if (GetMultiplayerId() == 0)
         {
-            sub_800ED10();
+            LinkRfu_CreateConnectionAsParent();
         }
         else
         {
-            sub_800ED28();
-            sub_8010F84(69, 0, 1);
+            LinkRfu_StopManagerBeforeEnteringChat();
+            SetHostRFUtgtGname(69, 0, 1);
         }
-        sub_801DD98();
+        EnterUnionRoomChat();
         break;
-    case 8:
-    case 72:
-        sub_80143E4(gBlockSendBuffer, FALSE);
-        SetMainCallback2(sub_80141A4);
+    case ACTIVITY_CARD:
+    case ACTIVITY_CARD | IN_UNION_ROOM:
+        CreateTrainerCardInBuffer(gBlockSendBuffer, FALSE);
+        SetMainCallback2(CB2_ShowCard);
         break;
-    case 9:
+    case ACTIVITY_POKEMON_JUMP:
         sub_8014290(USING_MINIGAME, 5, 1);
-        sub_802A9A8(GetCursorSelectionMonId(), CB2_LoadMap);
+        StartPokemonJump(GetCursorSelectionMonId(), CB2_LoadMap);
         break;
-    case 10:
+    case ACTIVITY_BERRY_CRUSH:
         sub_8014290(USING_BERRY_CRUSH, 9, 1);
-        sub_8020C70(CB2_LoadMap);
+        StartBerryCrush(CB2_LoadMap);
         break;
-    case 11:
+    case ACTIVITY_BERRY_PICK:
         sub_8014290(USING_MINIGAME, 5, 1);
-        sub_802493C(GetCursorSelectionMonId(), CB2_LoadMap);
+        StartDodrioBerryPicking(GetCursorSelectionMonId(), CB2_LoadMap);
         break;
     }
 
     DestroyTask(taskId);
     gSpecialVar_Result = 1;
-    if (gUnknown_02022C2C != 68)
+    if (gPlayerCurrActivity != (ACTIVITY_TRADE | IN_UNION_ROOM))
         ScriptContext2_Disable();
 }
 
-void sub_8014790(u8 taskId)
+static void Task_RunScriptAndFadeToActivity(u8 taskId)
 {
     s16 *data = gTasks[taskId].data;
     u16 *sendBuff = (u16*)(gBlockSendBuffer);
@@ -1551,10 +1591,10 @@ void sub_8014790(u8 taskId)
     {
     case 0:
         gSpecialVar_Result = 1;
-        switch (gUnknown_02022C2C)
+        switch (gPlayerCurrActivity)
         {
-        case 14:
-        case 28:
+        case ACTIVITY_BATTLE_TOWER:
+        case ACTIVITY_BATTLE_TOWER_OPEN:
             gLinkPlayers[0].linkType = LINKTYPE_BATTLE;
             gLinkPlayers[0].id = 0;
             gLinkPlayers[1].id = 2;
@@ -1565,8 +1605,12 @@ void sub_8014790(u8 taskId)
             RecordMixTrainerNames();
             ResetBlockReceivedFlags();
             break;
-        case 16:
-        case 23 ... 27:
+        case ACTIVITY_BERRY_BLENDER:
+        case ACTIVITY_CONTEST_COOL:
+        case ACTIVITY_CONTEST_BEAUTY:
+        case ACTIVITY_CONTEST_CUTE:
+        case ACTIVITY_CONTEST_SMART:
+        case ACTIVITY_CONTEST_TOUGH:
             RecordMixTrainerNames();
             DestroyTask(taskId);
         default:
@@ -1585,7 +1629,7 @@ void sub_8014790(u8 taskId)
     case 2:
         if (!gPaletteFade.active)
         {
-            if (gUnknown_02022C2C == 29)
+            if (gPlayerCurrActivity == 29)
             {
                 DestroyTask(taskId);
                 SetMainCallback2(CB2_StartCreateTradeMenu);
@@ -1601,7 +1645,7 @@ void sub_8014790(u8 taskId)
         if (IsLinkTaskFinished())
         {
             DestroyTask(taskId);
-            sub_80149D8();
+            CreateTask_StartActivity();
         }
         break;
     case 4:
@@ -1642,78 +1686,78 @@ void sub_8014790(u8 taskId)
     }
 }
 
-void sub_80149C4(void)
+static void CreateTask_RunScriptAndFadeToActivity(void)
 {
-    CreateTask(sub_8014790, 0);
+    CreateTask(Task_RunScriptAndFadeToActivity, 0);
 }
 
-void sub_80149D8(void)
+static void CreateTask_StartActivity(void)
 {
-    u8 taskId = CreateTask(sub_801440C, 0);
+    u8 taskId = CreateTask(Task_StartActivity, 0);
     gTasks[taskId].data[0] = 0;
 }
 
-void MEvent_CreateTask_Leader(u32 arg0)
+void MEvent_CreateTask_Leader(u32 activity)
 {
     u8 taskId;
-    struct UnkStruct_Leader *dataPtr;
+    struct WirelessLink_Leader *data;
 
-    taskId = CreateTask(sub_8014A40, 0);
-    gUnknown_02022C30.leader = dataPtr = (void*)(gTasks[taskId].data);
+    taskId = CreateTask(Task_MEvent_Leader, 0);
+    sWirelessLinkMain.leader = data = (void*)(gTasks[taskId].data);
 
-    dataPtr->state = 0;
-    dataPtr->textState = 0;
-    dataPtr->field_18 = arg0;
+    data->state = 0;
+    data->textState = 0;
+    data->activity = activity;
     gSpecialVar_Result = 0;
 }
 
-void sub_8014A40(u8 taskId)
+static void Task_MEvent_Leader(u8 taskId)
 {
-    struct UnkStruct_Leader *data = gUnknown_02022C30.leader;
+    struct WirelessLink_Leader *data = sWirelessLinkMain.leader;
     struct WindowTemplate winTemplate;
     s32 val;
 
     switch (data->state)
     {
     case 0:
-        gUnknown_02022C2C = data->field_18;
-        gUnknown_02022C2D = 2;
-        sub_8010F84(data->field_18, 0, 0);
-        sub_8010FA0(FALSE, FALSE);
-        sub_800B488();
+        gPlayerCurrActivity = data->activity;
+        sPlayerActivityGroupSize = 2;
+        SetHostRFUtgtGname(data->activity, 0, 0);
+        SetGnameBufferWonderFlags(FALSE, FALSE);
+        SetWirelessCommType1();
         OpenLink();
-        sub_8011C10(2);
+        InitializeRfuLinkManager_LinkLeader(2);
         data->state = 1;
         break;
     case 1:
-        data->field_4 = AllocZeroed(0x70);
-        data->field_0 = AllocZeroed(0xA0);
-        data->field_8 = AllocZeroed(0xA0);
-        sub_80175EC(data->field_4, 4);
-        sub_8017580(data->field_0->arr, 5);
-        sub_800DF90(&data->field_0->arr[0].unk.field_0, data->field_0->arr[0].unk.playerName);
+        data->field_4 = AllocZeroed(4 * sizeof(struct UnkStruct_x1C));
+        data->field_0 = AllocZeroed(5 * sizeof(struct UnkStruct_x20));
+        data->field_8 = AllocZeroed(5 * sizeof(struct UnkStruct_x20));
+        ClearUnkStruct_x1CArray(data->field_4, 4);
+        ClearUnkStruct_x20Array(data->field_0->arr, 5);
+        LinkRfu3_SetGnameUnameFromStaticBuffers(&data->field_0->arr[0].gname_uname.gname, data->field_0->arr[0].gname_uname.playerName);
         data->field_0->arr[0].field_18 = 0;
-        data->field_0->arr[0].field_1A_0 = 1;
+        data->field_0->arr[0].groupScheduledAnim = UNION_ROOM_SPAWN_IN;
         data->field_0->arr[0].field_1A_1 = 0;
         data->field_0->arr[0].field_1B = 0;
-        data->field_17 = sub_8016FC0(data->field_4, 0xFF);
+        data->listenTaskId = CreateTask_ListenForPartnersWithCompatibleSerialNos(data->field_4, 0xFF);
 
         winTemplate = gUnknown_082F011C;
         winTemplate.baseBlock = GetMysteryGiftBaseBlock();
         winTemplate.paletteNum = 0xC;
         data->listWindowId = AddWindow(&winTemplate);
         MG_DrawTextBorder(data->listWindowId);
-        gMultiuseListMenuTemplate = gUnknown_082F015C;
+        gMultiuseListMenuTemplate = sListMenuTemplate_PossibleGroupMembers;
         gMultiuseListMenuTemplate.windowId = data->listWindowId;
         data->listTaskId = ListMenuInit(&gMultiuseListMenuTemplate, 0, 0);
 
         CopyBgTilemapBufferToVram(0);
-        data->field_13 = 1;
+        data->playerCount = 1;
         data->state = 2;
         break;
     case 2:
-        StringCopy(gStringVar1, sLinkGroupActivityTexts[gUnknown_02022C2C]);
-        sub_801262C(gStringVar4, gUnknown_02022C2C);
+        StringCopy(gStringVar1, sLinkGroupActivityTexts[gPlayerCurrActivity]);
+        StringExpandPlaceholders_AwaitingCommFromAnother(gStringVar4, gPlayerCurrActivity);
         data->state = 3;
         break;
     case 3:
@@ -1721,7 +1765,7 @@ void sub_8014A40(u8 taskId)
         data->state = 4;
         break;
     case 4:
-        sub_801320C(data, 5, 6);
+        Leader_SetStateIfMemberListChanged(data, 5, 6);
         if (gMain.newKeys & B_BUTTON)
         {
             data->state = 13;
@@ -1731,7 +1775,7 @@ void sub_8014A40(u8 taskId)
     case 6:
         if (MG_PrintTextOnWindow1AndWaitButton(&data->textState, sText_LinkWithFriendDropped))
         {
-            data->field_13 = sub_8013398(data->field_0);
+            data->playerCount = sub_8013398(data->field_0);
             RedrawListMenu(data->listTaskId);
             data->state = 2;
         }
@@ -1745,38 +1789,38 @@ void sub_8014A40(u8 taskId)
         case 0:
             LoadWirelessStatusIndicatorSpriteGfx();
             CreateWirelessStatusIndicatorSprite(0, 0);
-            data->field_0->arr[data->field_13].field_1B = 0;
+            data->field_0->arr[data->playerCount].field_1B = 0;
             RedrawListMenu(data->listTaskId);
             data->field_19 = 5;
-            sub_8010688(5, ReadAsU16(data->field_0->arr[data->field_13].unk.field_0.unk_00.playerTrainerId), data->field_0->arr[data->field_13].unk.playerName);
+            SendByteToPartnerByIdAndName(5, ReadAsU16(data->field_0->arr[data->playerCount].gname_uname.gname.unk_00.playerTrainerId), data->field_0->arr[data->playerCount].gname_uname.playerName);
             data->state = 8;
             break;
         case 1:
         case -1:
             data->field_19 = 6;
-            sub_8010688(6, ReadAsU16(data->field_0->arr[data->field_13].unk.field_0.unk_00.playerTrainerId), data->field_0->arr[data->field_13].unk.playerName);
+            SendByteToPartnerByIdAndName(6, ReadAsU16(data->field_0->arr[data->playerCount].gname_uname.gname.unk_00.playerTrainerId), data->field_0->arr[data->playerCount].gname_uname.playerName);
             data->state = 8;
             break;
         }
         break;
     case 8:
-        val = sub_8010714(ReadAsU16(data->field_0->arr[data->field_13].unk.field_0.unk_00.playerTrainerId), data->field_0->arr[data->field_13].unk.playerName);
+        val = WaitSendByteToPartnerByIdAndName(ReadAsU16(data->field_0->arr[data->playerCount].gname_uname.gname.unk_00.playerTrainerId), data->field_0->arr[data->playerCount].gname_uname.playerName);
         if (val == 1)
         {
             if (data->field_19 == 5)
             {
-                data->field_0->arr[data->field_13].field_1B = 0;
+                data->field_0->arr[data->playerCount].field_1B = 0;
                 RedrawListMenu(data->listTaskId);
-                data->field_13++;
-                sub_8018404(gStringVar1, &data->field_0->arr[data->field_13 - 1]);
+                data->playerCount++;
+                IntlConvPartnerUname7(gStringVar1, &data->field_0->arr[data->playerCount - 1]);
                 StringExpandPlaceholders(gStringVar4, sText_AnOKWasSentToPlayer);
                 data->state = 9;
-                sub_800EF38();
+                LinkRfu_StopManagerAndFinalizeSlots();
             }
             else
             {
-                sub_8011DC0(data->field_0->arr[data->field_13].unk.playerName, ReadAsU16(data->field_0->arr[data->field_13].unk.field_0.unk_00.playerTrainerId));
-                data->field_0->arr[data->field_13].field_1A_0 = 0;
+                RequestDisconnectSlotByTrainerNameAndId(data->field_0->arr[data->playerCount].gname_uname.playerName, ReadAsU16(data->field_0->arr[data->playerCount].gname_uname.gname.unk_00.playerTrainerId));
+                data->field_0->arr[data->playerCount].groupScheduledAnim = UNION_ROOM_SPAWN_NONE;
                 sub_8013398(data->field_0);
                 RedrawListMenu(data->listTaskId);
                 data->state = 2;
@@ -1786,7 +1830,7 @@ void sub_8014A40(u8 taskId)
         }
         else if (val == 2)
         {
-            sub_8011A64(0, 0);
+            RfuSetErrorStatus(0, 0);
             data->state = 2;
         }
         break;
@@ -1795,17 +1839,17 @@ void sub_8014A40(u8 taskId)
         data->state = 10;
         break;
     case 10:
-        if (++data->field_E > 120)
+        if (++data->delayTimerAfterOk > 120)
             data->state = 11;
         break;
     case 11:
-        if (!sub_801320C(data, 5, 6))
+        if (!Leader_SetStateIfMemberListChanged(data, 5, 6))
             data->state = 12;
         break;
     case 12:
-        if (sub_800EF1C())
+        if (LmanAcceptSlotFlagIsNotZero())
         {
-            sub_800EF58(FALSE);
+            WaitRfuState(FALSE);
             data->state = 15;
         }
         else
@@ -1815,11 +1859,11 @@ void sub_8014A40(u8 taskId)
         break;
     case 13:
         DestroyWirelessStatusIndicatorSprite();
-        sub_800EDD4();
+        LinkRfu_Shutdown();
         DestroyListMenuTask(data->listTaskId, 0, 0);
         CopyBgTilemapBufferToVram(0);
         RemoveWindow(data->listWindowId);
-        DestroyTask(data->field_17);
+        DestroyTask(data->listenTaskId);
         Free(data->field_8);
         Free(data->field_0);
         Free(data->field_4);
@@ -1833,13 +1877,13 @@ void sub_8014A40(u8 taskId)
         }
         break;
     case 15:
-        if (sub_8011A74() == 1 || sub_8011A74() == 2)
+        if (RfuGetErrorStatus() == 1 || RfuGetErrorStatus() == 2)
         {
             data->state = 13;
         }
         else if (gReceivedRemoteLinkPlayers != 0)
         {
-            sub_8011068(1);
+            UpdateGameData_GroupLockedIn(TRUE);
             data->state++;
         }
         break;
@@ -1847,7 +1891,7 @@ void sub_8014A40(u8 taskId)
         DestroyListMenuTask(data->listTaskId, 0, 0);
         CopyBgTilemapBufferToVram(0);
         RemoveWindow(data->listWindowId);
-        DestroyTask(data->field_17);
+        DestroyTask(data->listenTaskId);
         Free(data->field_8);
         Free(data->field_0);
         Free(data->field_4);
@@ -1861,36 +1905,36 @@ void sub_8014A40(u8 taskId)
     }
 }
 
-void MEvent_CreateTask_CardOrNewsWithFriend(u32 arg0)
+void MEvent_CreateTask_CardOrNewsWithFriend(u32 activity)
 {
     u8 taskId;
-    struct UnkStruct_Group *dataPtr;
+    struct WirelessLink_Group *data;
 
-    taskId = CreateTask(sub_8014F48, 0);
-    gUnknown_02022C30.group = dataPtr = (void*)(gTasks[taskId].data);
-    gUnknown_03000DA4 = dataPtr;
+    taskId = CreateTask(Task_CardOrNewsWithFriend, 0);
+    sWirelessLinkMain.group = data = (void*)(gTasks[taskId].data);
+    sGroup = data;
 
-    dataPtr->state = 0;
-    dataPtr->textState = 0;
-    dataPtr->field_12 = arg0 - 21;
+    data->state = 0;
+    data->textState = 0;
+    data->isWonderNews = activity - ACTIVITY_WONDER_CARD2;
     gSpecialVar_Result = 0;
 }
 
-void sub_8014F48(u8 taskId)
+static void Task_CardOrNewsWithFriend(u8 taskId)
 {
     s32 id;
     struct WindowTemplate winTemplate1, winTemplate2;
-    struct UnkStruct_Group *data = gUnknown_02022C30.group;
+    struct WirelessLink_Group *data = sWirelessLinkMain.group;
 
     switch (data->state)
     {
     case 0:
-        sub_8010F84(data->field_12 + 21, 0, 0);
-        sub_800B488();
+        SetHostRFUtgtGname(data->isWonderNews + ACTIVITY_WONDER_CARD2, 0, 0);
+        SetWirelessCommType1();
         OpenLink();
-        sub_8011C5C();
-        data->field_4 = AllocZeroed(0x70);
-        data->field_0 = AllocZeroed(0x200);
+        InitializeRfuLinkManager_JoinGroup();
+        data->field_4 = AllocZeroed(4 * sizeof(struct UnkStruct_x1C));
+        data->field_0 = AllocZeroed(16 * sizeof(struct UnkStruct_x20));
         data->state = 1;
         break;
     case 1:
@@ -1898,9 +1942,9 @@ void sub_8014F48(u8 taskId)
         data->state = 2;
         break;
     case 2:
-        sub_80175EC(data->field_4, 4);
-        sub_8017580(data->field_0->arr, 16);
-        data->field_11 = sub_8016FC0(data->field_4, data->field_12 + 7);
+        ClearUnkStruct_x1CArray(data->field_4, 4);
+        ClearUnkStruct_x20Array(data->field_0->arr, 16);
+        data->listenTaskId = CreateTask_ListenForPartnersWithCompatibleSerialNos(data->field_4, data->isWonderNews + LINK_GROUP_WONDER_CARD);
 
         winTemplate1 = gUnknown_082F0174;
         winTemplate1.baseBlock = GetMysteryGiftBaseBlock();
@@ -1909,25 +1953,25 @@ void sub_8014F48(u8 taskId)
 
         winTemplate2 = gUnknown_082F017C;
         winTemplate2.paletteNum = 0xC;
-        data->field_D = AddWindow(&winTemplate2);
+        data->playerNameAndIdWindowId = AddWindow(&winTemplate2);
 
         MG_DrawTextBorder(data->listWindowId);
-        gMultiuseListMenuTemplate = gUnknown_082F0204;
+        gMultiuseListMenuTemplate = sListMenuTemplate_UnionRoomGroups;
         gMultiuseListMenuTemplate.windowId = data->listWindowId;
         data->listTaskId = ListMenuInit(&gMultiuseListMenuTemplate, 0, 0);
 
-        MG_DrawTextBorder(data->field_D);
-        FillWindowPixelBuffer(data->field_D, PIXEL_FILL(1));
-        PutWindowTilemap(data->field_D);
-        sub_80125BC(data->field_D);
-        CopyWindowToVram(data->field_D, 2);
+        MG_DrawTextBorder(data->playerNameAndIdWindowId);
+        FillWindowPixelBuffer(data->playerNameAndIdWindowId, PIXEL_FILL(1));
+        PutWindowTilemap(data->playerNameAndIdWindowId);
+        PrintPlayerNameAndIdOnWindow(data->playerNameAndIdWindowId);
+        CopyWindowToVram(data->playerNameAndIdWindowId, 2);
 
         CopyBgTilemapBufferToVram(0);
-        data->field_F = 0;
+        data->leaderId = 0;
         data->state = 3;
         break;
     case 3:
-        id = sub_8013E44();
+        id = GetNewLeaderCandidate();
         switch (id)
         {
         case 1:
@@ -1941,16 +1985,16 @@ void sub_8014F48(u8 taskId)
             {
                 // this unused variable along with the assignment is needed to match
                 u32 unusedVar;
-                unusedVar  = data->field_0->arr[id].unk.field_0.activity;
+                unusedVar  = data->field_0->arr[id].gname_uname.gname.activity;
 
-                if (data->field_0->arr[id].field_1A_0 == 1 && !data->field_0->arr[id].unk.field_0.started)
+                if (data->field_0->arr[id].groupScheduledAnim == UNION_ROOM_SPAWN_IN && !data->field_0->arr[id].gname_uname.gname.started)
                 {
-                    data->field_F = id;
+                    data->leaderId = id;
                     LoadWirelessStatusIndicatorSpriteGfx();
                     CreateWirelessStatusIndicatorSprite(0, 0);
                     RedrawListMenu(data->listTaskId);
-                    sub_8018404(gStringVar1, &data->field_0->arr[data->field_F]);
-                    sub_8011FC8(data->field_0->arr[data->field_F].unk.playerName, ReadAsU16(data->field_0->arr[data->field_F].unk.field_0.unk_00.playerTrainerId));
+                    IntlConvPartnerUname7(gStringVar1, &data->field_0->arr[data->leaderId]);
+                    CreateTask_RfuReconnectWithParent(data->field_0->arr[data->leaderId].gname_uname.playerName, ReadAsU16(data->field_0->arr[data->leaderId].gname_uname.gname.unk_00.playerTrainerId));
                     PlaySE(SE_PN_ON);
                     data->state = 4;
                 }
@@ -1968,17 +2012,17 @@ void sub_8014F48(u8 taskId)
         break;
     case 4:
         AddTextPrinterToWindow1(sText_AwaitingPlayersResponse);
-        sub_8018404(gStringVar1, &data->field_0->arr[data->field_F]);
+        IntlConvPartnerUname7(gStringVar1, &data->field_0->arr[data->leaderId]);
         data->state = 5;
         break;
     case 5:
-        if (gReceivedRemoteLinkPlayers != 0)
+        if (gReceivedRemoteLinkPlayers)
         {
-            gUnknown_02022C2C = data->field_0->arr[data->field_F].unk.field_0.activity;
+            gPlayerCurrActivity = data->field_0->arr[data->leaderId].gname_uname.gname.activity;
             data->state = 10;
         }
 
-        switch (sub_8011A74())
+        switch (RfuGetErrorStatus())
         {
         case 1:
         case 2:
@@ -1987,7 +2031,7 @@ void sub_8014F48(u8 taskId)
             break;
         case 5:
             AddTextPrinterToWindow1(sText_PlayerSentBackOK);
-            sub_8011A64(0, 0);
+            RfuSetErrorStatus(0, 0);
             break;
         }
         break;
@@ -1996,19 +2040,19 @@ void sub_8014F48(u8 taskId)
     case 10:
         DestroyListMenuTask(data->listTaskId, 0, 0);
         CopyBgTilemapBufferToVram(0);
-        RemoveWindow(data->field_D);
+        RemoveWindow(data->playerNameAndIdWindowId);
         RemoveWindow(data->listWindowId);
-        DestroyTask(data->field_11);
+        DestroyTask(data->listenTaskId);
         Free(data->field_0);
         Free(data->field_4);
         data->state++;
         break;
     case 9:
-        if (MG_PrintTextOnWindow1AndWaitButton(&data->textState, sLinkDroppedTexts[sub_8011A74()]))
+        if (MG_PrintTextOnWindow1AndWaitButton(&data->textState, sLinkDroppedTexts[RfuGetErrorStatus()]))
         {
             DestroyWirelessStatusIndicatorSprite();
             DestroyTask(taskId);
-            sub_800EDD4();
+            LinkRfu_Shutdown();
             gSpecialVar_Result = 5;
         }
         break;
@@ -2016,7 +2060,7 @@ void sub_8014F48(u8 taskId)
         DestroyWirelessStatusIndicatorSprite();
         AddTextPrinterToWindow1(sText_PleaseStartOver);
         DestroyTask(taskId);
-        sub_800EDD4();
+        LinkRfu_Shutdown();
         gSpecialVar_Result = 5;
         break;
     case 11:
@@ -2030,36 +2074,36 @@ void sub_8014F48(u8 taskId)
     }
 }
 
-void MEvent_CreateTask_CardOrNewsOverWireless(u32 arg0)
+void MEvent_CreateTask_CardOrNewsOverWireless(u32 activity)
 {
     u8 taskId;
-    struct UnkStruct_Group *dataPtr;
+    struct WirelessLink_Group *data;
 
-    taskId = CreateTask(sub_80152F4, 0);
-    gUnknown_02022C30.group = dataPtr = (void*)(gTasks[taskId].data);
-    gUnknown_03000DA4 = dataPtr;
+    taskId = CreateTask(Task_CardOrNewsOverWireless, 0);
+    sWirelessLinkMain.group = data = (void*)(gTasks[taskId].data);
+    sGroup = data;
 
-    dataPtr->state = 0;
-    dataPtr->textState = 0;
-    dataPtr->field_12 = arg0 - 21;
+    data->state = 0;
+    data->textState = 0;
+    data->isWonderNews = activity - ACTIVITY_WONDER_CARD2;
     gSpecialVar_Result = 0;
 }
 
-void sub_80152F4(u8 taskId)
+static void Task_CardOrNewsOverWireless(u8 taskId)
 {
     s32 id;
     struct WindowTemplate winTemplate;
-    struct UnkStruct_Group *data = gUnknown_02022C30.group;
+    struct WirelessLink_Group *data = sWirelessLinkMain.group;
 
     switch (data->state)
     {
     case 0:
-        sub_8010F84(0, 0, 0);
-        sub_800B488();
+        SetHostRFUtgtGname(0, 0, 0);
+        SetWirelessCommType1();
         OpenLink();
-        sub_8011C5C();
-        data->field_4 = AllocZeroed(0x70);
-        data->field_0 = AllocZeroed(0x200);
+        InitializeRfuLinkManager_JoinGroup();
+        data->field_4 = AllocZeroed(4 * sizeof(struct UnkStruct_x1C));
+        data->field_0 = AllocZeroed(16 * sizeof(struct UnkStruct_x20));
         data->state = 1;
         break;
     case 1:
@@ -2067,9 +2111,9 @@ void sub_80152F4(u8 taskId)
         data->state = 2;
         break;
     case 2:
-        sub_80175EC(data->field_4, 4);
-        sub_8017580(data->field_0->arr, 16);
-        data->field_11 = sub_8016FF0(data->field_4, data->field_12 + 7);
+        ClearUnkStruct_x1CArray(data->field_4, 4);
+        ClearUnkStruct_x20Array(data->field_0->arr, 16);
+        data->listenTaskId = CreateTask_ListenForPartnersWithSerial7F7D(data->field_4, data->isWonderNews + LINK_GROUP_WONDER_CARD);
 
         if (data->field_13 != 0)
         {
@@ -2078,18 +2122,18 @@ void sub_80152F4(u8 taskId)
             data->listWindowId = AddWindow(&winTemplate);
 
             MG_DrawTextBorder(data->listWindowId);
-            gMultiuseListMenuTemplate = gUnknown_082F0204;
+            gMultiuseListMenuTemplate = sListMenuTemplate_UnionRoomGroups;
             gMultiuseListMenuTemplate.windowId = data->listWindowId;
             data->listTaskId = ListMenuInit(&gMultiuseListMenuTemplate, 0, 0);
 
             CopyBgTilemapBufferToVram(0);
         }
 
-        data->field_F = 0;
+        data->leaderId = 0;
         data->state = 3;
         break;
     case 3:
-        id = sub_8013E44();
+        id = GetNewLeaderCandidate();
         switch (id)
         {
         case 1:
@@ -2101,17 +2145,17 @@ void sub_80152F4(u8 taskId)
         case 0:
             if (data->field_13 != 0)
                 id = ListMenu_ProcessInput(data->listTaskId);
-            if (data->field_14 > 120)
+            if (data->refreshTimer > 120)
             {
-                if (data->field_0->arr[0].field_1A_0 == 1 && !data->field_0->arr[0].unk.field_0.started)
+                if (data->field_0->arr[0].groupScheduledAnim == UNION_ROOM_SPAWN_IN && !data->field_0->arr[0].gname_uname.gname.started)
                 {
-                    if (sub_8016F1C(&data->field_0->arr[0].unk.field_0, data->field_12 + 7))
+                    if (GetGnameWonderFlagByLinkGroup(&data->field_0->arr[0].gname_uname.gname, data->isWonderNews + LINK_GROUP_WONDER_CARD))
                     {
-                        data->field_F = 0;
-                        data->field_14 = 0;
+                        data->leaderId = 0;
+                        data->refreshTimer = 0;
                         LoadWirelessStatusIndicatorSpriteGfx();
                         CreateWirelessStatusIndicatorSprite(0, 0);
-                        sub_8011FC8(data->field_0->arr[0].unk.playerName, ReadAsU16(data->field_0->arr[0].unk.field_0.unk_00.playerTrainerId));
+                        CreateTask_RfuReconnectWithParent(data->field_0->arr[0].gname_uname.playerName, ReadAsU16(data->field_0->arr[0].gname_uname.gname.unk_00.playerTrainerId));
                         PlaySE(SE_PN_ON);
                         data->state = 4;
                     }
@@ -2125,25 +2169,25 @@ void sub_80152F4(u8 taskId)
             else if (gMain.newKeys & B_BUTTON)
             {
                 data->state = 6;
-                data->field_14 = 0;
+                data->refreshTimer = 0;
             }
-            data->field_14++;
+            data->refreshTimer++;
             break;
         }
         break;
     case 4:
         AddTextPrinterToWindow1(sText_AwaitingResponseFromWirelessSystem);
-        sub_8018404(gStringVar1, &data->field_0->arr[data->field_F]);
+        IntlConvPartnerUname7(gStringVar1, &data->field_0->arr[data->leaderId]);
         data->state = 5;
         break;
     case 5:
-        if (gReceivedRemoteLinkPlayers != 0)
+        if (gReceivedRemoteLinkPlayers)
         {
-            gUnknown_02022C2C = data->field_0->arr[data->field_F].unk.field_0.activity;
+            gPlayerCurrActivity = data->field_0->arr[data->leaderId].gname_uname.gname.activity;
             data->state = 12;
         }
 
-        switch (sub_8011A74())
+        switch (RfuGetErrorStatus())
         {
         case 1:
         case 2:
@@ -2152,7 +2196,7 @@ void sub_80152F4(u8 taskId)
             break;
         case 5:
             AddTextPrinterToWindow1(sText_WirelessLinkEstablished);
-            sub_8011A64(0, 0);
+            RfuSetErrorStatus(0, 0);
             break;
         }
         break;
@@ -2166,7 +2210,7 @@ void sub_80152F4(u8 taskId)
             CopyBgTilemapBufferToVram(0);
             RemoveWindow(data->listWindowId);
         }
-        DestroyTask(data->field_11);
+        DestroyTask(data->listenTaskId);
         Free(data->field_0);
         Free(data->field_4);
         data->state++;
@@ -2176,7 +2220,7 @@ void sub_80152F4(u8 taskId)
         {
             DestroyWirelessStatusIndicatorSprite();
             DestroyTask(taskId);
-            sub_800EDD4();
+            LinkRfu_Shutdown();
             gSpecialVar_Result = 5;
         }
         break;
@@ -2185,16 +2229,16 @@ void sub_80152F4(u8 taskId)
         {
             DestroyWirelessStatusIndicatorSprite();
             DestroyTask(taskId);
-            sub_800EDD4();
+            LinkRfu_Shutdown();
             gSpecialVar_Result = 5;
         }
         break;
     case 11:
-        if (MG_PrintTextOnWindow1AndWaitButton(&data->textState, sNoWonderSharedTexts[data->field_12]))
+        if (MG_PrintTextOnWindow1AndWaitButton(&data->textState, sNoWonderSharedTexts[data->isWonderNews]))
         {
             DestroyWirelessStatusIndicatorSprite();
             DestroyTask(taskId);
-            sub_800EDD4();
+            LinkRfu_Shutdown();
             gSpecialVar_Result = 5;
         }
         break;
@@ -2211,35 +2255,35 @@ void sub_80152F4(u8 taskId)
 
 void UnionRoomSpecial(void)
 {
-    struct UnkStruct_URoom *dataPtr;
+    struct WirelessLink_URoom *data;
 
-    sub_8010F60();
-    CreateTask(sub_80156E0, 10);
+    ClearAndInitHostRFUtgtGname();
+    CreateTask(Task_RunUnionRoom, 10);
 
     // dumb line needed to match
-    gUnknown_02022C30.uRoom = gUnknown_02022C30.uRoom;
+    sWirelessLinkMain.uRoom = sWirelessLinkMain.uRoom;
 
-    dataPtr = AllocZeroed(sizeof(*gUnknown_02022C30.uRoom));
-    gUnknown_02022C30.uRoom = dataPtr;
-    gUnknown_03000DA8 = dataPtr;
+    data = AllocZeroed(sizeof(*sWirelessLinkMain.uRoom));
+    sWirelessLinkMain.uRoom = data;
+    sURoom = data;
 
-    dataPtr->state = 0;
-    dataPtr->textState = 0;
-    dataPtr->field_10 = 0;
-    dataPtr->field_12 = 0;
+    data->state = 0;
+    data->textState = 0;
+    data->field_10 = 0;
+    data->field_12 = 0;
 
     gSpecialVar_Result = 0;
-    sub_819A2BC(0xD0, 1);
+    ListMenuLoadStdPalAt(0xD0, 1);
 }
 
-u16 ReadAsU16(const u8 *ptr)
+static u16 ReadAsU16(const u8 *ptr)
 {
     return (ptr[1] << 8) | (ptr[0]);
 }
 
-void sub_8015664(u32 nextState, const u8 *src)
+static void ScheduleFieldMessageWithFollowupState(u32 nextState, const u8 *src)
 {
-    struct UnkStruct_URoom *data = gUnknown_02022C30.uRoom;
+    struct WirelessLink_URoom *data = sWirelessLinkMain.uRoom;
 
     data->state = 8;
     data->stateAfterPrint = nextState;
@@ -2247,83 +2291,83 @@ void sub_8015664(u32 nextState, const u8 *src)
         StringExpandPlaceholders(gStringVar4, src);
 }
 
-void sub_801568C(const u8 *src)
+static void ScheduleFieldMessageAndExit(const u8 *src)
 {
-    struct UnkStruct_URoom *data = gUnknown_02022C30.uRoom;
+    struct WirelessLink_URoom *data = sWirelessLinkMain.uRoom;
 
     data->state = 26;
     if (src != gStringVar4)
         StringExpandPlaceholders(gStringVar4, src);
 }
 
-void sub_80156B0(struct UnkStruct_URoom *data)
+static void sub_80156B0(struct WirelessLink_URoom *data)
 {
     memcpy(&gDecompressionBuffer[0x3F00], data->field_0, 0x100);
 }
 
-void sub_80156C8(struct UnkStruct_URoom *data)
+static void sub_80156C8(struct WirelessLink_URoom *data)
 {
     memcpy(data->field_0, &gDecompressionBuffer[0x3F00], 0x100);
 }
 
-void sub_80156E0(u8 taskId)
+static void Task_RunUnionRoom(u8 taskId)
 {
     u32 id = 0;
     s32 var5 = 0;
-    s32 playerGender = 0;
-    struct UnkStruct_URoom *data = gUnknown_02022C30.uRoom;
+    s32 playerGender = MALE;
+    struct WirelessLink_URoom *data = sWirelessLinkMain.uRoom;
     s16 *taskData = gTasks[taskId].data;
 
     switch (data->state)
     {
     case 0:
-        data->field_4 = AllocZeroed(0x70);
-        data->field_C = AllocZeroed(0x70);
-        data->field_0 = AllocZeroed(0x100);
-        data->field_8 = AllocZeroed(0x20);
-        sub_8017580(data->field_0->arr, 8);
-        gUnknown_02022C2C = 0x40;
-        data->field_20 = sub_8016DF0(data->field_C, data->field_4, 9);
+        data->field_4 = AllocZeroed(RFU_CHILD_MAX * sizeof(struct UnkStruct_x1C));
+        data->field_C = AllocZeroed(RFU_CHILD_MAX * sizeof(struct UnkStruct_x1C));
+        data->field_0 = AllocZeroed(8 * sizeof(struct UnkStruct_x20));
+        data->field_8 = AllocZeroed(sizeof(struct UnkStruct_x20));
+        ClearUnkStruct_x20Array(data->field_0->arr, 8);
+        gPlayerCurrActivity = IN_UNION_ROOM;
+        data->field_20 = CreateTask_SearchForChildOrParent(data->field_C, data->field_4, LINK_GROUP_UNION_ROOM_RESUME);
         sub_8019BA8(data->field_A0);
         sub_8019F2C();
         data->state = 1;
         break;
     case 1:
-        sub_8019E70(data->spriteIds, taskData[0]);
+        CreateGroupMemberObjectsInvisible(data->spriteIds, taskData[0]);
         if (++taskData[0] == 8)
             data->state = 2;
         break;
     case 2:
-        sub_8010F84(0x40, 0, 0);
+        SetHostRFUtgtGname(IN_UNION_ROOM, 0, 0);
         sub_8010FCC(sUnionRoomTrade.type, sUnionRoomTrade.playerSpecies, sUnionRoomTrade.playerLevel);
-        sub_800B488();
+        SetWirelessCommType1();
         OpenLink();
-        sub_8011C84();
-        sub_8017580(&data->field_8->arr[0], 1);
-        sub_80175EC(data->field_4, 4);
-        sub_80175EC(data->field_C, 4);
+        InitializeRfuLinkManager_EnterUnionRoom();
+        ClearUnkStruct_x20Array(&data->field_8->arr[0], 1);
+        ClearUnkStruct_x1CArray(data->field_4, 4);
+        ClearUnkStruct_x1CArray(data->field_C, 4);
         gSpecialVar_Result = 0;
         data->state = 3;
         break;
     case 3:
         if ((GetPartyMenuType() == PARTY_MENU_TYPE_UNION_ROOM_REGISTER 
-           || GetPartyMenuType() == PARTY_MENU_TYPE_UNION_ROOM_TRADE) 
+          || GetPartyMenuType() == PARTY_MENU_TYPE_UNION_ROOM_TRADE) 
            && sUnionRoomTrade.field_0 != 0)
         {
             id = GetCursorSelectionMonId();
             switch (sUnionRoomTrade.field_0)
             {
             case 1:
-                sub_8011090(0x54, 0, 1);
+                UpdateGameDataWithActivitySpriteGendersFlag(ACTIVITY_PLYRTALK | IN_UNION_ROOM, 0, TRUE);
                 if (id >= PARTY_SIZE)
                 {
                     ResetUnionRoomTrade(&sUnionRoomTrade);
                     sub_8010FCC(0, 0, 0);
-                    sub_801568C(sText_RegistrationCanceled);
+                    ScheduleFieldMessageAndExit(sText_RegistrationCanceled);
                 }
                 else if (!RegisterTradeMonAndGetIsEgg(GetCursorSelectionMonId(), &sUnionRoomTrade))
                 {
-                    sub_8015664(0x34, sText_ChooseRequestedMonType);
+                    ScheduleFieldMessageWithFollowupState(52, sText_ChooseRequestedMonType);
                 }
                 else
                 {
@@ -2335,12 +2379,12 @@ void sub_80156E0(u8 taskId)
                 taskData[1] = sUnionRoomTrade.field_8;
                 if (id >= PARTY_SIZE)
                 {
-                    sub_801568C(sText_TradeCanceled);
+                    ScheduleFieldMessageAndExit(sText_TradeCanceled);
                 }
                 else
                 {
-                    sub_8011090(0x54, 0, 1);
-                    gUnknown_02022C2C = 0x44;
+                    UpdateGameDataWithActivitySpriteGendersFlag(ACTIVITY_PLYRTALK | IN_UNION_ROOM, 0, TRUE);
+                    gPlayerCurrActivity = ACTIVITY_TRADE | IN_UNION_ROOM;
                     RegisterTradeMon(GetCursorSelectionMonId(), &sUnionRoomTrade);
                     data->state = 51;
                 }
@@ -2358,7 +2402,7 @@ void sub_80156E0(u8 taskId)
         {
             if (gSpecialVar_Result == 9)
             {
-                sub_8011090(0x54, 0, 1);
+                UpdateGameDataWithActivitySpriteGendersFlag(ACTIVITY_PLYRTALK | IN_UNION_ROOM, 0, 1);
                 PlaySE(SE_PC_LOGIN);
                 StringCopy(gStringVar1, gSaveBlock2Ptr->playerName);
                 data->state = 42;
@@ -2366,7 +2410,7 @@ void sub_80156E0(u8 taskId)
             }
             else if (gSpecialVar_Result == 11)
             {
-                sub_8011090(0x54, 0, 1);
+                UpdateGameDataWithActivitySpriteGendersFlag(ACTIVITY_PLYRTALK | IN_UNION_ROOM, 0, 1);
                 data->state = 23;
                 gSpecialVar_Result = 0;
             }
@@ -2382,146 +2426,146 @@ void sub_80156E0(u8 taskId)
         {
             if (gMain.newKeys & A_BUTTON)
             {
-                if (sub_801A2A8(data->field_0, &taskData[0], &taskData[1], data->spriteIds))
+                if (RfuUnionTool_GetGroupAndMemberInFrontOfPlayer(data->field_0, &taskData[0], &taskData[1], data->spriteIds))
                 {
                     PlaySE(SE_SELECT);
-                    sub_80181CC();
+                    UR_EnableScriptContext2AndFreezeObjectEvents();
                     data->state = 24;
                     break;
                 }
-                else if (sub_8017940())
+                else if (PlayerIsTalkingToUnionRoomAide())
                 {
-                    sub_8011090(0x54, 0, 1);
+                    UpdateGameDataWithActivitySpriteGendersFlag(ACTIVITY_PLYRTALK | IN_UNION_ROOM, 0, 1);
                     PlaySE(SE_PC_LOGIN);
-                    sub_80181CC();
+                    UR_EnableScriptContext2AndFreezeObjectEvents();
                     StringCopy(gStringVar1, gSaveBlock2Ptr->playerName);
                     data->state = 45;
                     break;
                 }
             }
 
-            switch (sub_8016B00())
+            switch (HandlePlayerListUpdate())
             {
             case 1:
                 PlaySE(SE_PC_LOGIN);
             case 2:
-                sub_801A274(data);
+                ScheduleUnionRoomPlayerRefresh(data);
                 break;
             case 4:
                 data->state = 11;
-                sub_80181CC();
+                UR_EnableScriptContext2AndFreezeObjectEvents();
                 sub_8010FCC(0, 0, 0);
-                sub_8011090(0x53, sub_80181DC(data), 0);
+                UpdateGameDataWithActivitySpriteGendersFlag(ACTIVITY_NPCTALK | IN_UNION_ROOM, GetActivePartnerSpriteGenderParam(data), 0);
                 break;
             }
-            sub_801A284(data);
+            HandleUnionRoomPlayerRefresh(data);
         }
         break;
     case 23:
         if (!FuncIsActiveTask(Task_ShowStartMenu))
         {
-            sub_8011090(0x40, 0, 0);
+            UpdateGameDataWithActivitySpriteGendersFlag(IN_UNION_ROOM, 0, FALSE);
             data->state = 4;
         }
         break;
     case 24:
-        sub_801704C();
-        playerGender = sub_8017CF8(taskData[1], data->field_0);
-        sub_8011090(0x54, 0, 1);
-        switch (sub_80179D4(data->field_0, taskData[0], taskData[1], playerGender))
+        UR_RunTextPrinters_CheckPrinter0Active();
+        playerGender = GetUnionRoomPlayerGender(taskData[1], data->field_0);
+        UpdateGameDataWithActivitySpriteGendersFlag(ACTIVITY_PLYRTALK | IN_UNION_ROOM, 0, 1);
+        switch (UnionRoomGetPlayerInteractionResponse(data->field_0, taskData[0], taskData[1], playerGender))
         {
         case 0:
             data->state = 26;
             break;
         case 1:
-            sub_8012188(data->field_0->arr[taskData[1]].unk.playerName, &data->field_0->arr[taskData[1]].unk.field_0, gUnknown_02022C2C);
+            sub_8012188(data->field_0->arr[taskData[1]].gname_uname.playerName, &data->field_0->arr[taskData[1]].gname_uname.gname, gPlayerCurrActivity);
             data->field_12 = id; // Should be just 0, but won't match any other way.
             data->state = 25;
             break;
         case 2:
-            sub_8015664(0x13, gStringVar4);
+            ScheduleFieldMessageWithFollowupState(19, gStringVar4);
             break;
         }
         break;
     case 25:
-        sub_801704C();
-        switch (sub_8011A74())
+        UR_RunTextPrinters_CheckPrinter0Active();
+        switch (RfuGetErrorStatus())
         {
         case 4:
-            sub_801818C(TRUE);
+            HandleCancelTrade(TRUE);
             data->state = 4;
             break;
         case 1:
         case 2:
-            if (sub_8011B90() == TRUE)
-                sub_801568C(sText_TrainerAppearsBusy);
+            if (IsUnionRoomListenTaskActive() == TRUE)
+                ScheduleFieldMessageAndExit(sText_TrainerAppearsBusy);
             else
-                sub_8015664(30, sText_TrainerAppearsBusy);
+                ScheduleFieldMessageWithFollowupState(30, sText_TrainerAppearsBusy);
 
-            gUnknown_02022C2C = 0x40;
+            gPlayerCurrActivity = IN_UNION_ROOM;
             break;
         }
 
-        if (gReceivedRemoteLinkPlayers != 0)
+        if (gReceivedRemoteLinkPlayers)
         {
-            sub_80143E4(gBlockSendBuffer, TRUE);
-            CreateTask(sub_80140E0, 5);
+            CreateTrainerCardInBuffer(gBlockSendBuffer, TRUE);
+            CreateTask(Task_ExchangeCards, 5);
             data->state = 38;
         }
         break;
     case 38:
-        if (!FuncIsActiveTask(sub_80140E0))
+        if (!FuncIsActiveTask(Task_ExchangeCards))
         {
-            if (gUnknown_02022C2C == 0x44)
-                sub_8015664(31, sText_AwaitingPlayersResponseAboutTrade);
+            if (gPlayerCurrActivity == (ACTIVITY_TRADE | IN_UNION_ROOM))
+                ScheduleFieldMessageWithFollowupState(31, sText_AwaitingPlayersResponseAboutTrade);
             else
                 data->state = 5;
         }
         break;
     case 30:
-        if (gReceivedRemoteLinkPlayers == 0)
+        if (!gReceivedRemoteLinkPlayers)
         {
-            sub_801818C(FALSE);
-            sub_801A3D0(taskData[0], taskData[1], data->field_0);
+            HandleCancelTrade(FALSE);
+            UpdateUnionGroupMemberFacing(taskData[0], taskData[1], data->field_0);
             data->state = 2;
         }
         break;
     case 5:
-        id = sub_80179AC(&data->field_0->arr[taskData[1]]);
-        playerGender = sub_8017CF8(taskData[1], data->field_0);
-        sub_8015664(6, sHiDoSomethingTexts[id][playerGender]);
+        id = ConvPartnerUnameAndGetWhetherMetAlready(&data->field_0->arr[taskData[1]]);
+        playerGender = GetUnionRoomPlayerGender(taskData[1], data->field_0);
+        ScheduleFieldMessageWithFollowupState(6, sHiDoSomethingTexts[id][playerGender]);
         break;
     case 6:
-        var5 = sub_8017178(&data->textState, &data->field_1B, &data->field_1C, &gUnknown_082F021C, &gUnknown_082F0244);
+        var5 = ListMenuHandler_AllItemsAvailable(&data->textState, &data->topListMenuWindowId, &data->topListMenuId, &sWindowTemplate_InviteToActivity, &sListMenuTemplate_InviteToActivity);
         if (var5 != -1)
         {
-            if (gReceivedRemoteLinkPlayers == 0)
+            if (!gReceivedRemoteLinkPlayers)
             {
                 data->state = 28;
             }
             else
             {
-                data->field_98 = 0;
-                playerGender = sub_8017CF8(taskData[1], data->field_0);
-                if (var5 == -2 || var5 == 0x40)
+                data->partnerYesNoResponse = 0;
+                playerGender = GetUnionRoomPlayerGender(taskData[1], data->field_0);
+                if (var5 == -2 || var5 == IN_UNION_ROOM)
                 {
-                    data->field_4C[0] = 0x40;
-                    sub_800FE50(data->field_4C);
+                    data->playerSendBuffer[0] = IN_UNION_ROOM;
+                    sub_800FE50(data->playerSendBuffer);
                     StringCopy(gStringVar4, sIfYouWantToDoSomethingTexts[gLinkPlayers[0].gender]);
                     data->state = 32;
                 }
                 else
                 {
-                    gUnknown_02022C2C = var5;
-                    gUnknown_02022C2D = (u32)(var5) >> 8;
-                    if (gUnknown_02022C2C == 0x41 && !HasAtLeastTwoMonsOfLevel30OrLower())
+                    gPlayerCurrActivity = var5;
+                    sPlayerActivityGroupSize = (u32)(var5) >> 8;
+                    if (gPlayerCurrActivity == (ACTIVITY_BATTLE_SINGLE | IN_UNION_ROOM) && !HasAtLeastTwoMonsOfLevel30OrLower())
                     {
-                        sub_8015664(5, sText_NeedTwoMonsOfLevel30OrLower1);
+                        ScheduleFieldMessageWithFollowupState(5, sText_NeedTwoMonsOfLevel30OrLower1);
                     }
                     else
                     {
-                        data->field_4C[0] = gUnknown_02022C2C | 0x40;
-                        sub_800FE50(data->field_4C);
+                        data->playerSendBuffer[0] = gPlayerCurrActivity | 0x40;
+                        sub_800FE50(data->playerSendBuffer);
                         data->state = 27;
                     }
                 }
@@ -2533,9 +2577,9 @@ void sub_80156E0(u8 taskId)
         data->state = 36;
         break;
     case 27:
-        sub_8017FD8(data);
-        playerGender = sub_8017CF8(taskData[1], data->field_0);
-        id = sub_8017984(data->field_4C[0] & 0x3F);
+        PollPartnerYesNoResponse(data);
+        playerGender = GetUnionRoomPlayerGender(taskData[1], data->field_0);
+        id = GetResponseIdx_InviteToURoomActivity(data->playerSendBuffer[0] & 0x3F);
         if (PrintOnTextbox(&data->textState, sText_WaitOrShowCardTexts[playerGender][id]))
         {
             taskData[3] = 0;
@@ -2547,26 +2591,26 @@ void sub_80156E0(u8 taskId)
         data->state = 36;
         break;
     case 31:
-        data->field_4C[0] = 0x44;
-        data->field_4C[1] = sUnionRoomTrade.species;
-        data->field_4C[2] = sUnionRoomTrade.level;
-        sub_800FE50(data->field_4C);
+        data->playerSendBuffer[0] = ACTIVITY_TRADE | IN_UNION_ROOM;
+        data->playerSendBuffer[1] = sUnionRoomTrade.species;
+        data->playerSendBuffer[2] = sUnionRoomTrade.level;
+        sub_800FE50(data->playerSendBuffer);
         data->state = 29;
         break;
     case 29:
-        if (gReceivedRemoteLinkPlayers == 0)
+        if (!gReceivedRemoteLinkPlayers)
         {
             StringCopy(gStringVar4, sText_TrainerBattleBusy);
             data->state = 28;
         }
         else
         {
-            sub_8017FD8(data);
-            if (data->field_98 == 0x51)
+            PollPartnerYesNoResponse(data);
+            if (data->partnerYesNoResponse == (ACTIVITY_ACCEPT | IN_UNION_ROOM))
             {
-                if (gUnknown_02022C2C == 8)
+                if (gPlayerCurrActivity == ACTIVITY_CARD)
                 {
-                    sub_8018220(gStringVar4, data, FALSE);
+                    ViewURoomPartnerTrainerCard(gStringVar4, data, FALSE);
                     data->state = 40;
                 }
                 else
@@ -2574,27 +2618,27 @@ void sub_80156E0(u8 taskId)
                     data->state = 13;
                 }
             }
-            else if (data->field_98 == 0x52)
+            else if (data->partnerYesNoResponse == (ACTIVITY_DECLINE | IN_UNION_ROOM))
             {
                 data->state = 32;
-                sub_8017D9C(gStringVar4, gUnknown_02022C2C | 0x40, gLinkPlayers[0].gender);
-                gUnknown_02022C2C = 0;
+                GetURoomActivityRejectMsg(gStringVar4, gPlayerCurrActivity | IN_UNION_ROOM, gLinkPlayers[0].gender);
+                gPlayerCurrActivity = ACTIVITY_NONE;
             }
         }
         break;
 
     case 7:
-        id = sub_80179AC(&data->field_0->arr[taskData[1]]);
-        playerGender = sub_8017CF8(taskData[1], data->field_0);
-        sub_8015664(6, sHiDoSomethingTexts[id][playerGender]);
+        id = ConvPartnerUnameAndGetWhetherMetAlready(&data->field_0->arr[taskData[1]]);
+        playerGender = GetUnionRoomPlayerGender(taskData[1], data->field_0);
+        ScheduleFieldMessageWithFollowupState(6, sHiDoSomethingTexts[id][playerGender]);
         break;
     case 40:
         if (PrintOnTextbox(&data->textState, gStringVar4))
         {
             data->state = 41;
             sub_800ADF8();
-            data->field_98 = 0;
-            data->field_9A[0] = 0;
+            data->partnerYesNoResponse = 0;
+            data->recvActivityRequest[0] = 0;
         }
         break;
     case 41:
@@ -2603,7 +2647,7 @@ void sub_80156E0(u8 taskId)
             if (GetMultiplayerId() == 0)
             {
                 StringCopy(gStringVar1, gLinkPlayers[GetMultiplayerId() ^ 1].name);
-                id = sub_800E540(gLinkPlayers[1].trainerId, gLinkPlayers[1].name);
+                id = PlayerHasMetTrainerBefore(gLinkPlayers[1].trainerId, gLinkPlayers[1].name);
                 StringExpandPlaceholders(gStringVar4, sAwaitingResponseTexts[id]);
                 data->state = 33;
             }
@@ -2614,21 +2658,21 @@ void sub_80156E0(u8 taskId)
         }
         break;
     case 19:
-        switch (sub_80170B8(&data->textState, FALSE))
+        switch (UnionRoomHandleYesNo(&data->textState, FALSE))
         {
         case 0:
             CopyBgTilemapBufferToVram(0);
-            gUnknown_02022C2C = 0x45;
-            sub_8011090(0x45, 0, 1);
-            sub_8012188(data->field_0->arr[taskData[1]].unk.playerName, &data->field_0->arr[taskData[1]].unk.field_0, gUnknown_02022C2C);
+            gPlayerCurrActivity = ACTIVITY_CHAT | IN_UNION_ROOM;
+            UpdateGameDataWithActivitySpriteGendersFlag(ACTIVITY_CHAT | IN_UNION_ROOM, 0, 1);
+            sub_8012188(data->field_0->arr[taskData[1]].gname_uname.playerName, &data->field_0->arr[taskData[1]].gname_uname.gname, gPlayerCurrActivity);
             data->field_12 = taskData[1];
             data->state = 20;
             taskData[3] = 0;
             break;
         case 1:
         case -1:
-            playerGender = sub_8017CF8(taskData[1], data->field_0);
-            sub_801568C(sDeclineBattleTexts[playerGender]);
+            playerGender = GetUnionRoomPlayerGender(taskData[1], data->field_0);
+            ScheduleFieldMessageAndExit(sDeclineBattleTexts[playerGender]);
             break;
         }
         break;
@@ -2640,20 +2684,20 @@ void sub_80156E0(u8 taskId)
         }
         break;
     case 21:
-        switch (sub_8011A74())
+        switch (RfuGetErrorStatus())
         {
         case 4:
-            sub_801818C(TRUE);
+            HandleCancelTrade(TRUE);
             data->state = 4;
             break;
         case 1:
         case 2:
-            playerGender = sub_8017CF8(taskData[1], data->field_0);
-            sub_8011090(0x54, 0, 1);
-            if (sub_8011B90() == TRUE)
-                sub_801568C(sChatDeclinedTexts[playerGender]);
+            playerGender = GetUnionRoomPlayerGender(taskData[1], data->field_0);
+            UpdateGameDataWithActivitySpriteGendersFlag(ACTIVITY_PLYRTALK | IN_UNION_ROOM, 0, 1);
+            if (IsUnionRoomListenTaskActive() == TRUE)
+                ScheduleFieldMessageAndExit(sChatDeclinedTexts[playerGender]);
             else
-                sub_8015664(30, sChatDeclinedTexts[playerGender]);
+                ScheduleFieldMessageWithFollowupState(30, sChatDeclinedTexts[playerGender]);
             break;
         case 3:
             data->state = 22;
@@ -2662,55 +2706,55 @@ void sub_80156E0(u8 taskId)
         taskData[3]++;
         break;
     case 22:
-        if (sub_8011A80())
+        if (RfuIsErrorStatus1or2())
         {
-            playerGender = sub_8017CF8(taskData[1], data->field_0);
-            sub_8011090(0x54, 0, 1);
-            if (sub_8011B90() == TRUE)
-                sub_801568C(sChatDeclinedTexts[playerGender]);
+            playerGender = GetUnionRoomPlayerGender(taskData[1], data->field_0);
+            UpdateGameDataWithActivitySpriteGendersFlag(ACTIVITY_PLYRTALK | IN_UNION_ROOM, 0, 1);
+            if (IsUnionRoomListenTaskActive() == TRUE)
+                ScheduleFieldMessageAndExit(sChatDeclinedTexts[playerGender]);
             else
-                sub_8015664(30, sChatDeclinedTexts[playerGender]);
+                ScheduleFieldMessageWithFollowupState(30, sChatDeclinedTexts[playerGender]);
         }
-        if (gReceivedRemoteLinkPlayers != 0)
+        if (gReceivedRemoteLinkPlayers)
             data->state = 16;
         break;
     case 11:
         PlaySE(SE_PINPON);
         sub_800EF7C();
         data->state = 12;
-        data->field_9A[0] = 0;
+        data->recvActivityRequest[0] = 0;
         break;
     case 12:
-        if (sub_8011A80())
+        if (RfuIsErrorStatus1or2())
         {
-            sub_801818C(FALSE);
+            HandleCancelTrade(FALSE);
             data->state = 2;
         }
-        else if (gReceivedRemoteLinkPlayers != 0)
+        else if (gReceivedRemoteLinkPlayers)
         {
-            sub_80143E4(gBlockSendBuffer, TRUE);
-            CreateTask(sub_80140E0, 5);
+            CreateTrainerCardInBuffer(gBlockSendBuffer, TRUE);
+            CreateTask(Task_ExchangeCards, 5);
             data->state = 39;
         }
         break;
     case 39:
-        sub_801689C(data);
-        if (!FuncIsActiveTask(sub_80140E0))
+        ReceiveUnionRoomActivityPacket(data);
+        if (!FuncIsActiveTask(Task_ExchangeCards))
         {
             data->state = 33;
             StringCopy(gStringVar1, gLinkPlayers[1].name);
-            id = sub_800E540(gLinkPlayers[1].trainerId, gLinkPlayers[1].name);
+            id = PlayerHasMetTrainerBefore(gLinkPlayers[1].trainerId, gLinkPlayers[1].name);
             StringExpandPlaceholders(gStringVar4, sPlayerContactedYouTexts[id]);
         }
         break;
     case 33:
-        sub_801689C(data);
+        ReceiveUnionRoomActivityPacket(data);
         if (PrintOnTextbox(&data->textState, gStringVar4))
             data->state = 34;
         break;
     case 34:
-        sub_801689C(data);
-        if (sub_80168DC(data) && gMain.newKeys & B_BUTTON)
+        ReceiveUnionRoomActivityPacket(data);
+        if (UnionRoom_HandleContactFromOtherPlayer(data) && gMain.newKeys & B_BUTTON)
         {
             sub_8011DE0(1);
             StringCopy(gStringVar4, sText_ChatEnded);
@@ -2718,53 +2762,53 @@ void sub_80156E0(u8 taskId)
         }
         break;
     case 35:
-        sub_8015664(9, gStringVar4);
+        ScheduleFieldMessageWithFollowupState(9, gStringVar4);
         break;
     case 9:
-        switch (sub_80170B8(&data->textState, FALSE))
+        switch (UnionRoomHandleYesNo(&data->textState, FALSE))
         {
         case 0:
-            data->field_4C[0] = 0x51;
-            if (gUnknown_02022C2C == 0x45)
-                sub_8011090(gUnknown_02022C2C | 0x40, sub_801100C(1), 0);
+            data->playerSendBuffer[0] = ACTIVITY_ACCEPT | IN_UNION_ROOM;
+            if (gPlayerCurrActivity == (ACTIVITY_CHAT | IN_UNION_ROOM))
+                UpdateGameDataWithActivitySpriteGendersFlag(gPlayerCurrActivity | 0x40, sub_801100C(1), 0);
             else
-                sub_8011090(gUnknown_02022C2C | 0x40, sub_801100C(1), 1);
+                UpdateGameDataWithActivitySpriteGendersFlag(gPlayerCurrActivity | 0x40, sub_801100C(1), 1);
 
             data->field_8->arr[0].field_1B = 0;
             taskData[3] = 0;
-            if (gUnknown_02022C2C == 0x41)
+            if (gPlayerCurrActivity == (ACTIVITY_BATTLE_SINGLE | IN_UNION_ROOM))
             {
                 if (!HasAtLeastTwoMonsOfLevel30OrLower())
                 {
-                    data->field_4C[0] = 0x52;
-                    sub_800FE50(data->field_4C);
+                    data->playerSendBuffer[0] = ACTIVITY_DECLINE | IN_UNION_ROOM;
+                    sub_800FE50(data->playerSendBuffer);
                     data->state = 10;
                     StringCopy(gStringVar4, sText_NeedTwoMonsOfLevel30OrLower2);
                 }
                 else
                 {
-                    sub_800FE50(data->field_4C);
+                    sub_800FE50(data->playerSendBuffer);
                     data->state = 13;
                 }
             }
-            else if (gUnknown_02022C2C == 0x48)
+            else if (gPlayerCurrActivity == (ACTIVITY_CARD | IN_UNION_ROOM))
             {
-                sub_800FE50(data->field_4C);
-                sub_8018220(gStringVar4, data, 1);
+                sub_800FE50(data->playerSendBuffer);
+                ViewURoomPartnerTrainerCard(gStringVar4, data, TRUE);
                 data->state = 40;
             }
             else
             {
-                sub_800FE50(data->field_4C);
+                sub_800FE50(data->playerSendBuffer);
                 data->state = 13;
             }
             break;
         case 1:
         case -1:
-            data->field_4C[0] = 0x52;
-            sub_800FE50(data->field_4C);
+            data->playerSendBuffer[0] = ACTIVITY_DECLINE | IN_UNION_ROOM;
+            sub_800FE50(data->playerSendBuffer);
             data->state = 10;
-            sub_8013078(gStringVar4, gUnknown_02022C2C);
+            GetYouDeclinedTheOfferMessage(gStringVar4, gPlayerCurrActivity);
             break;
         }
         break;
@@ -2773,22 +2817,22 @@ void sub_80156E0(u8 taskId)
         data->state = 36;
         break;
     case 36:
-        if (gReceivedRemoteLinkPlayers == 0)
+        if (!gReceivedRemoteLinkPlayers)
         {
-            gUnknown_02022C2C = 0x40;
-            sub_8015664(0x25, gStringVar4);
-            memset(data->field_4C, 0, sizeof(data->field_4C));
-            data->field_9A[0] = 0;
-            data->field_98 = 0;
+            gPlayerCurrActivity = IN_UNION_ROOM;
+            ScheduleFieldMessageWithFollowupState(37, gStringVar4);
+            memset(data->playerSendBuffer, 0, sizeof(data->playerSendBuffer));
+            data->recvActivityRequest[0] = 0;
+            data->partnerYesNoResponse = 0;
         }
         break;
     case 37:
         data->state = 2;
-        sub_801818C(FALSE);
+        HandleCancelTrade(FALSE);
         break;
     case 13:
-        sub_8017E00(gStringVar4, gUnknown_02022C2C | 0x40);
-        sub_8015664(14, gStringVar4);
+        GetURoomActivityStartMsg(gStringVar4, gPlayerCurrActivity | IN_UNION_ROOM);
+        ScheduleFieldMessageWithFollowupState(14, gStringVar4);
         break;
     case 14:
         sub_800ADF8();
@@ -2804,7 +2848,7 @@ void sub_80156E0(u8 taskId)
         Free(data->field_C);
         Free(data->field_4);
         DestroyTask(data->field_20);
-        sub_8019F04(data->spriteIds);
+        DestroyGroupMemberObjects(data->spriteIds);
         data->state = 17;
         break;
     case 17:
@@ -2816,28 +2860,28 @@ void sub_80156E0(u8 taskId)
         {
             sub_8019E3C();
             DestroyTask(taskId);
-            Free(gUnknown_02022C30.uRoom);
-            sub_80149D8();
+            Free(sWirelessLinkMain.uRoom);
+            CreateTask_StartActivity();
         }
         break;
     case 42:
-        if (sub_800F7DC()->species == SPECIES_NONE)
+        if (GetHostRFUtgtGname()->species == SPECIES_NONE)
         {
             data->state = 43;
         }
         else
         {
-            if (sub_800F7DC()->species == SPECIES_EGG)
+            if (GetHostRFUtgtGname()->species == SPECIES_EGG)
             {
                 StringCopy(gStringVar4, sText_CancelRegistrationOfEgg);
             }
             else
             {
-                StringCopy(gStringVar1, gSpeciesNames[sub_800F7DC()->species]);
-                ConvertIntToDecimalStringN(gStringVar2, sub_800F7DC()->level, STR_CONV_MODE_LEFT_ALIGN, 3);
+                StringCopy(gStringVar1, gSpeciesNames[GetHostRFUtgtGname()->species]);
+                ConvertIntToDecimalStringN(gStringVar2, GetHostRFUtgtGname()->level, STR_CONV_MODE_LEFT_ALIGN, 3);
                 StringExpandPlaceholders(gStringVar4, sText_CancelRegistrationOfMon);
             }
-            sub_8015664(44, gStringVar4);
+            ScheduleFieldMessageWithFollowupState(44, gStringVar4);
         }
         break;
     case 43:
@@ -2845,23 +2889,23 @@ void sub_80156E0(u8 taskId)
             data->state = 47;
         break;
     case 47:
-        var5 = sub_8017178(&data->textState, &data->field_1D, &data->field_1E, &gUnknown_082F025C, &gUnknown_082F027C);
+        var5 = ListMenuHandler_AllItemsAvailable(&data->textState, &data->tradeBoardSelectWindowId, &data->tradeBoardDetailsWindowId, &gUnknown_082F025C, &gUnknown_082F027C);
         if (var5 != -1)
         {
             if (var5 == -2 || var5 == 3)
             {
                 data->state = 4;
-                sub_801818C(TRUE);
+                HandleCancelTrade(TRUE);
             }
             else
             {
                 switch (var5)
                 {
                 case 1: // REGISTER
-                    sub_8015664(53, sText_WhichMonWillYouOffer);
+                    ScheduleFieldMessageWithFollowupState(53, sText_WhichMonWillYouOffer);
                     break;
                 case 2: // INFO
-                    sub_8015664(47, sText_TradingBoardInfo);
+                    ScheduleFieldMessageWithFollowupState(47, sText_TradingBoardInfo);
                     break;
                 }
             }
@@ -2880,7 +2924,7 @@ void sub_80156E0(u8 taskId)
         }
         break;
     case 52:
-        var5 = sub_8017178(&data->textState, &data->field_1D, &data->field_1E, &gUnknown_082F0294, &sMenuTemplate_TradingBoardRequestType);
+        var5 = ListMenuHandler_AllItemsAvailable(&data->textState, &data->tradeBoardSelectWindowId, &data->tradeBoardDetailsWindowId, &gUnknown_082F0294, &sMenuTemplate_TradingBoardRequestType);
         if (var5 != -1)
         {
             switch (var5)
@@ -2889,7 +2933,7 @@ void sub_80156E0(u8 taskId)
             case 18:
                 ResetUnionRoomTrade(&sUnionRoomTrade);
                 sub_8010FCC(0, 0, 0);
-                sub_801568C(sText_RegistrationCanceled);
+                ScheduleFieldMessageAndExit(sText_RegistrationCanceled);
                 break;
             default:
                 sUnionRoomTrade.type = var5;
@@ -2900,17 +2944,17 @@ void sub_80156E0(u8 taskId)
         break;
     case 55:
         sub_8010FCC(sUnionRoomTrade.type, sUnionRoomTrade.playerSpecies, sUnionRoomTrade.playerLevel);
-        sub_801568C(sText_RegistraionCompleted);
+        ScheduleFieldMessageAndExit(sText_RegistraionCompleted);
         break;
     case 44:
-        switch (sub_80170B8(&data->textState, FALSE))
+        switch (UnionRoomHandleYesNo(&data->textState, FALSE))
         {
         case 0:
             data->state = 56;
             break;
         case 1:
         case -1:
-            sub_801818C(TRUE);
+            HandleCancelTrade(TRUE);
             data->state = 4;
             break;
         }
@@ -2920,7 +2964,7 @@ void sub_80156E0(u8 taskId)
         {
             sub_8010FCC(0, 0, 0);
             ResetUnionRoomTrade(&sUnionRoomTrade);
-            sub_801818C(TRUE);
+            HandleCancelTrade(TRUE);
             data->state = 4;
         }
         break;
@@ -2929,38 +2973,38 @@ void sub_80156E0(u8 taskId)
             data->state = 46;
         break;
     case 46:
-        sub_80173B0();
+        UR_ClearBg0();
         data->state = 48;
         break;
     case 48:
-        var5 = sub_80172A0(&data->textState, &data->field_1D, &data->field_4A, &data->field_1E, &gUnknown_082F034C, &gUnknown_082F03A4, data->field_0);
+        var5 = TradeBoardMenuHandler(&data->textState, &data->tradeBoardSelectWindowId, &data->field_4A, &data->tradeBoardDetailsWindowId, &gUnknown_082F034C, &sTradeBoardListMenuTemplate, data->field_0);
         if (var5 != -1)
         {
             switch (var5)
             {
             case -2:
             case 8:
-                sub_801818C(TRUE);
+                HandleCancelTrade(TRUE);
                 data->state = 4;
                 break;
             default:
-                sub_80173B0();
-                switch (sub_8017D04(data->field_0->arr[var5].unk.field_0.type, data->field_0->arr[var5].unk.field_0.species))
+                UR_ClearBg0();
+                switch (IsRequestedTypeOrEggInPlayerParty(data->field_0->arr[var5].gname_uname.gname.type, data->field_0->arr[var5].gname_uname.gname.species))
                 {
-                case 0:
-                    sub_8018404(gStringVar1, &data->field_0->arr[var5]);
-                    sub_8015664(49, sText_AskTrainerToMakeTrade);
+                case UR_TRADE_MATCH:
+                    IntlConvPartnerUname7(gStringVar1, &data->field_0->arr[var5]);
+                    ScheduleFieldMessageWithFollowupState(49, sText_AskTrainerToMakeTrade);
                     taskData[1] = var5;
                     break;
-                case 1:
-                    sub_8018404(gStringVar1, &data->field_0->arr[var5]);
-                    StringCopy(gStringVar2, gTypeNames[data->field_0->arr[var5].unk.field_0.type]);
-                    sub_8015664(46, sText_DontHaveTypeTrainerWants);
+                case UR_TRADE_NOTYPE:
+                    IntlConvPartnerUname7(gStringVar1, &data->field_0->arr[var5]);
+                    StringCopy(gStringVar2, gTypeNames[data->field_0->arr[var5].gname_uname.gname.type]);
+                    ScheduleFieldMessageWithFollowupState(46, sText_DontHaveTypeTrainerWants);
                     break;
-                case 2:
-                    sub_8018404(gStringVar1, &data->field_0->arr[var5]);
-                    StringCopy(gStringVar2, gTypeNames[data->field_0->arr[var5].unk.field_0.type]);
-                    sub_8015664(46, sText_DontHaveEggTrainerWants);
+                case UR_TRADE_NOEGG:
+                    IntlConvPartnerUname7(gStringVar1, &data->field_0->arr[var5]);
+                    StringCopy(gStringVar2, gTypeNames[data->field_0->arr[var5].gname_uname.gname.type]);
+                    ScheduleFieldMessageWithFollowupState(46, sText_DontHaveEggTrainerWants);
                     break;
                 }
                 break;
@@ -2968,14 +3012,14 @@ void sub_80156E0(u8 taskId)
         }
         break;
     case 49:
-        switch (sub_80170B8(&data->textState, FALSE))
+        switch (UnionRoomHandleYesNo(&data->textState, FALSE))
         {
         case 0:
             data->state = 50;
             break;
         case -1:
         case 1:
-            sub_801818C(TRUE);
+            HandleCancelTrade(TRUE);
             data->state = 4;
             break;
         }
@@ -2984,9 +3028,9 @@ void sub_80156E0(u8 taskId)
         if (PrintOnTextbox(&data->textState, sText_WhichMonWillYouOffer))
         {
             sUnionRoomTrade.field_0 = 2;
-            memcpy(&gUnknown_02022C38, &data->field_0->arr[taskData[1]].unk.field_0.unk_00, sizeof(gUnknown_02022C38));
-            gUnionRoomRequestedMonType = data->field_0->arr[taskData[1]].unk.field_0.type;
-            gUnionRoomOfferedSpecies = data->field_0->arr[taskData[1]].unk.field_0.species;
+            memcpy(&gPartnerTgtGnameSub, &data->field_0->arr[taskData[1]].gname_uname.gname.unk_00, sizeof(gPartnerTgtGnameSub));
+            gUnionRoomRequestedMonType = data->field_0->arr[taskData[1]].gname_uname.gname.type;
+            gUnionRoomOfferedSpecies = data->field_0->arr[taskData[1]].gname_uname.gname.species;
             gFieldCallback = FieldCB_ContinueScriptUnionRoom;
             ChooseMonForTradingBoard(PARTY_MENU_TYPE_UNION_ROOM_TRADE, CB2_ReturnToField);
             sub_80156B0(data);
@@ -2994,17 +3038,17 @@ void sub_80156E0(u8 taskId)
         }
         break;
     case 51:
-        gUnknown_02022C2C = 0x44;
-        sub_8012188(data->field_0->arr[taskData[1]].unk.playerName, &data->field_0->arr[taskData[1]].unk.field_0, 0x44);
-        sub_8018404(gStringVar1, &data->field_0->arr[taskData[1]]);
-        sub_8017020(sCommunicatingWaitTexts[2]);
+        gPlayerCurrActivity = ACTIVITY_TRADE | IN_UNION_ROOM;
+        sub_8012188(data->field_0->arr[taskData[1]].gname_uname.playerName, &data->field_0->arr[taskData[1]].gname_uname.gname, 0x44);
+        IntlConvPartnerUname7(gStringVar1, &data->field_0->arr[taskData[1]]);
+        UR_PrintFieldMessage(sCommunicatingWaitTexts[2]);
         data->state = 25;
         break;
     case 26:
         if (PrintOnTextbox(&data->textState, gStringVar4))
         {
-            sub_801818C(TRUE);
-            sub_801A3D0(taskData[0], taskData[1], data->field_0);
+            HandleCancelTrade(TRUE);
+            UpdateUnionGroupMemberFacing(taskData[0], taskData[1], data->field_0);
             data->state = 4;
         }
         break;
@@ -3021,37 +3065,37 @@ void var_800D_set_xB(void)
         gSpecialVar_Result = 11;
 }
 
-void sub_801689C(struct UnkStruct_URoom *arg0)
+static void ReceiveUnionRoomActivityPacket(struct WirelessLink_URoom *data)
 {
     if (gRecvCmds[1][1] != 0 && (gRecvCmds[1][0] & 0xFF00) == 0x2F00)
     {
-        arg0->field_9A[0] = gRecvCmds[1][1];
-        if (gRecvCmds[1][1] == 0x44)
+        data->recvActivityRequest[0] = gRecvCmds[1][1];
+        if (gRecvCmds[1][1] == (ACTIVITY_TRADE | IN_UNION_ROOM))
         {
-            arg0->field_9A[1] = gRecvCmds[1][2];
-            arg0->field_9A[2] = gRecvCmds[1][3];
+            data->recvActivityRequest[1] = gRecvCmds[1][2];
+            data->recvActivityRequest[2] = gRecvCmds[1][3];
         }
     }
 }
 
-bool32 sub_80168DC(struct UnkStruct_URoom *arg0)
+static bool32 UnionRoom_HandleContactFromOtherPlayer(struct WirelessLink_URoom *data)
 {
-    if (arg0->field_9A[0] != 0)
+    if (data->recvActivityRequest[0] != 0)
     {
-        s32 var = sub_8017EA0(gStringVar4, gLinkPlayers[1].gender, &arg0->field_9A[0], arg0);
+        s32 var = GetChatLeaderActionRequestMessage(gStringVar4, gLinkPlayers[1].gender, &data->recvActivityRequest[0], data);
         if (var == 0)
         {
             return TRUE;
         }
         else if (var == 1)
         {
-            arg0->state = 35;
-            gUnknown_02022C2C = arg0->field_9A[0];
+            data->state = 35;
+            gPlayerCurrActivity = data->recvActivityRequest[0];
             return FALSE;
         }
         else if (var == 2)
         {
-            arg0->state = 36;
+            data->state = 36;
             sub_800AC34();
             return FALSE;
         }
@@ -3062,53 +3106,53 @@ bool32 sub_80168DC(struct UnkStruct_URoom *arg0)
 
 void InitUnionRoom(void)
 {
-    struct UnkStruct_URoom *ptr;
+    struct WirelessLink_URoom *data;
 
     sUnionRoomPlayerName[0] = EOS;
-    CreateTask(sub_801697C, 0);
-    gUnknown_02022C30.uRoom = gUnknown_02022C30.uRoom; // Needed to match.
-    gUnknown_02022C30.uRoom = ptr = AllocZeroed(sizeof(struct UnkStruct_URoom));
-    gUnknown_03000DA8 = gUnknown_02022C30.uRoom;
-    ptr->state = 0;
-    ptr->textState = 0;
-    ptr->field_10 = 0;
-    ptr->field_12 = 0;
+    CreateTask(Task_InitUnionRoom, 0);
+    sWirelessLinkMain.uRoom = sWirelessLinkMain.uRoom; // Needed to match.
+    sWirelessLinkMain.uRoom = data = AllocZeroed(sizeof(struct WirelessLink_URoom));
+    sURoom = sWirelessLinkMain.uRoom;
+    data->state = 0;
+    data->textState = 0;
+    data->field_10 = 0;
+    data->field_12 = 0;
     sUnionRoomPlayerName[0] = EOS;
 }
 
-void sub_801697C(u8 taskId)
+static void Task_InitUnionRoom(u8 taskId)
 {
     s32 i;
     u8 text[32];
-    struct UnkStruct_URoom *structPtr = gUnknown_02022C30.uRoom;
+    struct WirelessLink_URoom *data = sWirelessLinkMain.uRoom;
 
-    switch (structPtr->state)
+    switch (data->state)
     {
     case 0:
-        structPtr->state = 1;
+        data->state = 1;
         break;
     case 1:
-        sub_8010F84(0xC, 0, 0);
-        sub_800B488();
+        SetHostRFUtgtGname(ACTIVITY_SEARCH, 0, 0);
+        SetWirelessCommType1();
         OpenLink();
-        sub_8011C84();
-        sub_80111B0(1);
-        structPtr->state = 2;
+        InitializeRfuLinkManager_EnterUnionRoom();
+        sub_80111B0(TRUE);
+        data->state = 2;
         break;
     case 2:
-        structPtr->field_4 = AllocZeroed(0x70);
-        sub_80175EC(structPtr->field_4, 4);
-        structPtr->field_C = AllocZeroed(0x70);
-        sub_80175EC(structPtr->field_C, 4);
-        structPtr->field_0 = AllocZeroed(0x100);
-        sub_8017580(structPtr->field_0->arr, 8);
-        structPtr->field_8 = AllocZeroed(0x20);
-        sub_8017580(&structPtr->field_8->arr[0], 1);
-        structPtr->field_20 = sub_8016DF0(structPtr->field_C, structPtr->field_4, 10);
-        structPtr->state = 3;
+        data->field_4 = AllocZeroed(4 * sizeof(struct UnkStruct_x1C));
+        ClearUnkStruct_x1CArray(data->field_4, 4);
+        data->field_C = AllocZeroed(4 * sizeof(struct UnkStruct_x1C));
+        ClearUnkStruct_x1CArray(data->field_C, 4);
+        data->field_0 = AllocZeroed(8 * sizeof(struct UnkStruct_x20));
+        ClearUnkStruct_x20Array(data->field_0->arr, 8);
+        data->field_8 = AllocZeroed(sizeof(struct UnkStruct_x20));
+        ClearUnkStruct_x20Array(&data->field_8->arr[0], 1);
+        data->field_20 = CreateTask_SearchForChildOrParent(data->field_C, data->field_4, 10);
+        data->state = 3;
         break;
     case 3:
-        switch (sub_8016B00())
+        switch (HandlePlayerListUpdate())
         {
         case 1:
         case 2:
@@ -3116,10 +3160,10 @@ void sub_801697C(u8 taskId)
             {
                 for (i = 0; i < PLAYER_NAME_LENGTH + 1; i++)
                 {
-                    if (structPtr->field_0->arr[i].field_1A_0 == 1)
+                    if (data->field_0->arr[i].groupScheduledAnim == UNION_ROOM_SPAWN_IN)
                     {
-                        sub_8018404(text, &structPtr->field_0->arr[i]);
-                        if (sub_800E540(ReadAsU16(structPtr->field_0->arr[i].unk.field_0.unk_00.playerTrainerId), text))
+                        IntlConvPartnerUname7(text, &data->field_0->arr[i]);
+                        if (PlayerHasMetTrainerBefore(ReadAsU16(data->field_0->arr[i].gname_uname.gname.unk_00.playerTrainerId), text))
                         {
                             StringCopy(sUnionRoomPlayerName, text);
                             break;
@@ -3133,13 +3177,13 @@ void sub_801697C(u8 taskId)
         }
         break;
     case 4:
-        free(structPtr->field_8);
-        free(structPtr->field_0);
-        free(structPtr->field_C);
-        free(structPtr->field_4);
-        DestroyTask(structPtr->field_20);
-        free(gUnknown_02022C30.uRoom);
-        sub_800EDD4();
+        free(data->field_8);
+        free(data->field_0);
+        free(data->field_C);
+        free(data->field_4);
+        DestroyTask(data->field_20);
+        free(sWirelessLinkMain.uRoom);
+        LinkRfu_Shutdown();
         DestroyTask(taskId);
         break;
     }
@@ -3159,158 +3203,158 @@ bool16 BufferUnionRoomPlayerName(void)
     }
 }
 
-u8 sub_8016B00(void)
+static u8 HandlePlayerListUpdate(void)
 {
     s32 i;
     u8 j;
-    struct UnkStruct_URoom *structPtr = gUnknown_02022C30.uRoom;
+    struct WirelessLink_URoom *data = sWirelessLinkMain.uRoom;
     s32 r7 = 0;
 
-    for (i = 0; i < 4; i++)
+    for (i = 0; i < RFU_CHILD_MAX; i++)
     {
-        if (sub_8017630(&structPtr->field_C->arr[i].unk0, &gUnknown_082F045C) == TRUE)
+        if (AreGnameUnameDifferent(&data->field_C->arr[i].gname_uname, &sWirelessGnameUnamePair_Dummy) == TRUE)
         {
-            structPtr->field_8->arr[0].unk = structPtr->field_C->arr[i].unk0;
-            structPtr->field_8->arr[0].field_18 = 0;
-            structPtr->field_8->arr[0].field_1A_0 = 1;
-            structPtr->field_8->arr[0].field_1B = 1;
+            data->field_8->arr[0].gname_uname = data->field_C->arr[i].gname_uname;
+            data->field_8->arr[0].field_18 = 0;
+            data->field_8->arr[0].groupScheduledAnim = UNION_ROOM_SPAWN_IN;
+            data->field_8->arr[0].field_1B = 1;
             return 4;
         }
     }
     for (j = 0; j < 8; j++)
     {
-        if (structPtr->field_0->arr[j].field_1A_0 != 0)
+        if (data->field_0->arr[j].groupScheduledAnim != UNION_ROOM_SPAWN_NONE)
         {
-            i = sub_80176E4(&structPtr->field_0->arr[j], &structPtr->field_4->arr[0]);
+            i = Findx20Inx1CArray(&data->field_0->arr[j], &data->field_4->arr[0]);
             if (i != 0xFF)
             {
-                if (structPtr->field_0->arr[j].field_1A_0 == 1)
+                if (data->field_0->arr[j].groupScheduledAnim == UNION_ROOM_SPAWN_IN)
                 {
-                    if (sub_8017678(&structPtr->field_0->arr[j].unk, &structPtr->field_4->arr[i].unk0))
+                    if (AreUnionRoomPlayerGnamesDifferent(&data->field_0->arr[j].gname_uname, &data->field_4->arr[i].gname_uname))
                     {
-                        structPtr->field_0->arr[j].unk = structPtr->field_4->arr[i].unk0;
-                        structPtr->field_0->arr[j].field_1B = 0x40;
+                        data->field_0->arr[j].gname_uname = data->field_4->arr[i].gname_uname;
+                        data->field_0->arr[j].field_1B = 0x40;
                         r7 = 1;
                     }
-                    else if (structPtr->field_0->arr[j].field_1B != 0)
+                    else if (data->field_0->arr[j].field_1B != 0)
                     {
-                        structPtr->field_0->arr[j].field_1B--;
-                        if (structPtr->field_0->arr[j].field_1B == 0)
+                        data->field_0->arr[j].field_1B--;
+                        if (data->field_0->arr[j].field_1B == 0)
                             r7 = 2;
                     }
                 }
                 else
                 {
-                    structPtr->field_0->arr[j].field_1A_0 = 1;
-                    structPtr->field_0->arr[j].field_1B = 0;
+                    data->field_0->arr[j].groupScheduledAnim = UNION_ROOM_SPAWN_IN;
+                    data->field_0->arr[j].field_1B = 0;
                     r7 = 2;
                 }
-                structPtr->field_0->arr[j].field_18 = 0;
+                data->field_0->arr[j].field_18 = 0;
             }
-            else if (structPtr->field_0->arr[j].field_1A_0 != 2)
+            else if (data->field_0->arr[j].groupScheduledAnim != UNION_ROOM_SPAWN_OUT)
             {
-                structPtr->field_0->arr[j].field_18++;
-                if (structPtr->field_0->arr[j].field_18 >= 600)
+                data->field_0->arr[j].field_18++;
+                if (data->field_0->arr[j].field_18 >= 600)
                 {
-                    structPtr->field_0->arr[j].field_1A_0 = 2;
+                    data->field_0->arr[j].groupScheduledAnim = UNION_ROOM_SPAWN_OUT;
                     r7 = 2;
                 }
             }
-            else if (structPtr->field_0->arr[j].field_1A_0 == 2)
+            else if (data->field_0->arr[j].groupScheduledAnim == UNION_ROOM_SPAWN_OUT)
             {
-                structPtr->field_0->arr[j].field_18++;
-                if (structPtr->field_0->arr[j].field_18 >= 900)
+                data->field_0->arr[j].field_18++;
+                if (data->field_0->arr[j].field_18 >= 900)
                 {
-                    sub_8017580(&structPtr->field_0->arr[j], 1);
+                    ClearUnkStruct_x20Array(&data->field_0->arr[j], 1);
                 }
             }
         }
     }
-    for (i = 0; i < 4; i++)
+    for (i = 0; i < RFU_CHILD_MAX; i++)
     {
-        if (sub_8017734(&structPtr->field_0->arr[0], &structPtr->field_4->arr[i], 8) != 0xFF)
+        if (Appendx1Ctox20(&data->field_0->arr[0], &data->field_4->arr[i], 8) != 0xFF)
             r7 = 1;
     }
 
     return r7;
 }
 
-void sub_8016CA0(u8 taskId)
+static void Task_SearchForChildOrParent(u8 taskId)
 {
     s32 i, j;
-    struct UnkStruct_Shared sp0;
+    struct WirelessGnameUnamePair gname_uname;
     struct UnkStruct_Main4 **ptr = (void*) gTasks[taskId].data;
-    bool8 r4;
+    bool8 isParent;
 
-    for (i = 0; i < 4; i++)
+    for (i = 0; i < RFU_CHILD_MAX; i++)
     {
-        r4 = sub_800DE7C(&sp0.field_0, sp0.playerName, i);
-        if (!sub_8013D88(sp0.field_0.activity, gTasks[taskId].data[4]))
+        isParent = LinkRfu_GetNameIfCompatible(&gname_uname.gname, gname_uname.playerName, i);
+        if (!IsPartnerActivityAcceptable(gname_uname.gname.activity, gTasks[taskId].data[4]))
         {
-            sp0 = gUnknown_082F045C;
+            gname_uname = sWirelessGnameUnamePair_Dummy;
         }
-        if (sp0.field_0.unk_00.language == 1)
+        if (gname_uname.gname.unk_00.language == LANGUAGE_JAPANESE)
         {
-            sp0 = gUnknown_082F045C;
+            gname_uname = sWirelessGnameUnamePair_Dummy;
         }
-        if (!r4)
+        if (!isParent)
         {
             for (j = 0; j < i; j++)
             {
-                if (!sub_8017630(&ptr[1]->arr[j].unk0, &sp0))
+                if (!AreGnameUnameDifferent(&ptr[1]->arr[j].gname_uname, &gname_uname))
                 {
-                    sp0 = gUnknown_082F045C;
+                    gname_uname = sWirelessGnameUnamePair_Dummy;
                 }
             }
-            ptr[1]->arr[i].unk0 = sp0;
-            ptr[1]->arr[i].unk18 = sub_8017630(&ptr[1]->arr[i].unk0, &gUnknown_082F045C);
+            ptr[1]->arr[i].gname_uname = gname_uname;
+            ptr[1]->arr[i].active = AreGnameUnameDifferent(&ptr[1]->arr[i].gname_uname, &sWirelessGnameUnamePair_Dummy);
         }
         else
         {
-            ptr[0]->arr[i].unk0 = sp0;
-            ptr[0]->arr[i].unk18 = sub_8017630(&ptr[0]->arr[i].unk0, &gUnknown_082F045C);
+            ptr[0]->arr[i].gname_uname = gname_uname;
+            ptr[0]->arr[i].active = AreGnameUnameDifferent(&ptr[0]->arr[i].gname_uname, &sWirelessGnameUnamePair_Dummy);
         }
     }
 }
 
-u8 sub_8016DF0(struct UnkStruct_Main4 * a0, struct UnkStruct_Main4 * a1, u32 a2)
+static u8 CreateTask_SearchForChildOrParent(struct UnkStruct_Main4 * main4_parent, struct UnkStruct_Main4 * main4_child, u32 linkGroup)
 {
-    u8 taskId = CreateTask(sub_8016CA0, 0);
+    u8 taskId = CreateTask(Task_SearchForChildOrParent, 0);
     struct UnkStruct_Main4 ** data = (void *)gTasks[taskId].data;
-    data[0] = a0;
-    data[1] = a1;
-    gTasks[taskId].data[4] = a2;
+    data[0] = main4_parent;
+    data[1] = main4_child;
+    gTasks[taskId].data[4] = linkGroup;
     return taskId;
 }
 
-void sub_8016E24(u8 taskId)
+static void Task_ListenForPartnersWithCompatibleSerialNos(u8 taskId)
 {
     s32 i, j;
     struct UnkStruct_Main4 **ptr = (void*) gTasks[taskId].data;
 
-    for (i = 0; i < 4; i++)
+    for (i = 0; i < RFU_CHILD_MAX; i++)
     {
-        sub_800DE7C(&ptr[0]->arr[i].unk0.field_0, ptr[0]->arr[i].unk0.playerName, i);
-        if (!sub_8013D88(ptr[0]->arr[i].unk0.field_0.activity, gTasks[taskId].data[2]))
+        LinkRfu_GetNameIfCompatible(&ptr[0]->arr[i].gname_uname.gname, ptr[0]->arr[i].gname_uname.playerName, i);
+        if (!IsPartnerActivityAcceptable(ptr[0]->arr[i].gname_uname.gname.activity, gTasks[taskId].data[2]))
         {
-            ptr[0]->arr[i].unk0 = gUnknown_082F045C;
+            ptr[0]->arr[i].gname_uname = sWirelessGnameUnamePair_Dummy;
         }
         for (j = 0; j < i; j++)
         {
-            if (!sub_8017630(&ptr[0]->arr[j].unk0, &ptr[0]->arr[i].unk0))
+            if (!AreGnameUnameDifferent(&ptr[0]->arr[j].gname_uname, &ptr[0]->arr[i].gname_uname))
             {
-                ptr[0]->arr[i].unk0 = gUnknown_082F045C;
+                ptr[0]->arr[i].gname_uname = sWirelessGnameUnamePair_Dummy;
             }
         }
-        ptr[0]->arr[i].unk18 = sub_8017630(&ptr[0]->arr[i].unk0, &gUnknown_082F045C);
+        ptr[0]->arr[i].active = AreGnameUnameDifferent(&ptr[0]->arr[i].gname_uname, &sWirelessGnameUnamePair_Dummy);
     }
 }
 
-bool32 sub_8016F1C(struct GFtgtGname *arg0, s16 arg1)
+static bool32 GetGnameWonderFlagByLinkGroup(struct GFtgtGname *gname, s16 linkGroup)
 {
-    if (arg1 == 7)
+    if (linkGroup == LINK_GROUP_WONDER_CARD)
     {
-        if (!arg0->unk_00.hasCard)
+        if (!gname->unk_00.hasCard)
         {
             return FALSE;
         }
@@ -3319,9 +3363,9 @@ bool32 sub_8016F1C(struct GFtgtGname *arg0, s16 arg1)
             return TRUE;
         }
     }
-    else if (arg1 == 8)
+    else if (linkGroup == LINK_GROUP_WONDER_NEWS)
     {
-        if (!arg0->unk_00.hasNews)
+        if (!gname->unk_00.hasNews)
         {
             return FALSE;
         }
@@ -3336,40 +3380,40 @@ bool32 sub_8016F1C(struct GFtgtGname *arg0, s16 arg1)
     }
 }
 
-void sub_8016F44(u8 taskId)
+static void Task_ListenForPartnersWithSerial7F7D(u8 taskId)
 {
     s32 i;
     struct UnkStruct_Main4 **ptr = (void*) gTasks[taskId].data;
 
-    for (i = 0; i < 4; i++)
+    for (i = 0; i < RFU_CHILD_MAX; i++)
     {
-        if (sub_800DF34(&ptr[0]->arr[i].unk0.field_0, ptr[0]->arr[i].unk0.playerName, i))
+        if (LinkRfu_GetNameIfSerial7F7D(&ptr[0]->arr[i].gname_uname.gname, ptr[0]->arr[i].gname_uname.playerName, i))
         {
-            sub_8016F1C(&ptr[0]->arr[i].unk0.field_0, gTasks[taskId].data[2]);
+            GetGnameWonderFlagByLinkGroup(&ptr[0]->arr[i].gname_uname.gname, gTasks[taskId].data[2]);
         }
-        ptr[0]->arr[i].unk18 = sub_8017630(&ptr[0]->arr[i].unk0, &gUnknown_082F045C);
+        ptr[0]->arr[i].active = AreGnameUnameDifferent(&ptr[0]->arr[i].gname_uname, &sWirelessGnameUnamePair_Dummy);
     }
 }
 
-u8 sub_8016FC0(struct UnkStruct_Main4 * a0, u32 a1)
+static u8 CreateTask_ListenForPartnersWithCompatibleSerialNos(struct UnkStruct_Main4 * main4, u32 linkGroup)
 {
-    u8 taskId = CreateTask(sub_8016E24, 0);
+    u8 taskId = CreateTask(Task_ListenForPartnersWithCompatibleSerialNos, 0);
     struct UnkStruct_Main4 **ptr = (void*) gTasks[taskId].data;
-    ptr[0] = a0;
-    gTasks[taskId].data[2] = a1;
+    ptr[0] = main4;
+    gTasks[taskId].data[2] = linkGroup;
     return taskId;
 }
 
-u8 sub_8016FF0(struct UnkStruct_Main4 * a0, u32 a1)
+static u8 CreateTask_ListenForPartnersWithSerial7F7D(struct UnkStruct_Main4 * main4, u32 linkGroup)
 {
-    u8 taskId = CreateTask(sub_8016F44, 0);
+    u8 taskId = CreateTask(Task_ListenForPartnersWithSerial7F7D, 0);
     struct UnkStruct_Main4 **ptr = (void*) gTasks[taskId].data;
-    ptr[0] = a0;
-    gTasks[taskId].data[2] = a1;
+    ptr[0] = main4;
+    gTasks[taskId].data[2] = linkGroup;
     return taskId;
 }
 
-bool32 sub_8017020(const u8 *src)
+static bool32 UR_PrintFieldMessage(const u8 *src)
 {
     LoadMessageBoxAndBorderGfx();
     DrawDialogueFrame(0, 1);
@@ -3378,19 +3422,15 @@ bool32 sub_8017020(const u8 *src)
     return FALSE;
 }
 
-bool32 sub_801704C(void)
+static bool32 UR_RunTextPrinters_CheckPrinter0Active(void)
 {
     if (!RunTextPrintersAndIsPrinter0Active())
-    {
         return TRUE;
-    }
     else
-    {
         return FALSE;
-    }
 }
 
-bool8 PrintOnTextbox(u8 *textState, const u8 *str)
+static bool8 PrintOnTextbox(u8 *textState, const u8 *str)
 {
     switch (*textState)
     {
@@ -3412,31 +3452,31 @@ bool8 PrintOnTextbox(u8 *textState, const u8 *str)
     return FALSE;
 }
 
-s8 sub_80170B8(u8 *arg0, bool32 arg1)
+static s8 UnionRoomHandleYesNo(u8 *state, bool32 noDraw)
 {
     s8 r1;
 
-    switch (*arg0)
+    switch (*state)
     {
     case 0:
-        if (arg1)
+        if (noDraw)
         {
             return -3;
         }
         DisplayYesNoMenuDefaultYes();
-        (*arg0)++;
+        (*state)++;
         break;
     case 1:
-        if (arg1)
+        if (noDraw)
         {
             sub_8198C78();
-            *arg0 = 0;
+            *state = 0;
             return -3;
         }
         r1 = Menu_ProcessInputNoWrapClearOnChoose();
         if (r1 == -1 || r1 == 0 || r1 == 1)
         {
-            *arg0 = 0;
+            *state = 0;
             return r1;
         }
         break;
@@ -3444,64 +3484,64 @@ s8 sub_80170B8(u8 *arg0, bool32 arg1)
     return -2;
 }
 
-u8 sub_8017118(const struct WindowTemplate * template)
+static u8 CreateTradeBoardWindow(const struct WindowTemplate * template)
 {
     u8 windowId = AddWindow(template);
     DrawStdWindowFrame(windowId, FALSE);
-    FillWindowPixelBuffer(windowId, 0xFF);
-    sub_80173E0(windowId, 1, sText_NameWantedOfferLv, 8, 1, 6);
+    FillWindowPixelBuffer(windowId, PIXEL_FILL(15));
+    UR_AddTextPrinterParameterized(windowId, 1, sText_NameWantedOfferLv, 8, 1, 6);
     CopyWindowToVram(windowId, 2);
     PutWindowTilemap(windowId);
     return windowId;
 }
 
-void sub_8017168(u8 windowId)
+static void DeleteTradeBoardWindow(u8 windowId)
 {
     RemoveWindow(windowId);
 }
 
-s32 sub_8017178(u8 *arg0, u8 *arg1, u8 *arg2, const struct WindowTemplate *winTemplate, const struct ListMenuTemplate *menuTemplate)
+static s32 ListMenuHandler_AllItemsAvailable(u8 *state, u8 *windowId, u8 *listMenuId, const struct WindowTemplate *winTemplate, const struct ListMenuTemplate *menuTemplate)
 {
-    s32 r1, r8;
+    s32 maxWidth, input;
     struct WindowTemplate winTemplateCopy;
 
-    switch (*arg0)
+    switch (*state)
     {
     case 0:
         winTemplateCopy = *winTemplate;
-        r1 = Intl_GetListMenuWidth(menuTemplate);
-        if (winTemplateCopy.width > r1)
+        maxWidth = Intl_GetListMenuWidth(menuTemplate);
+        if (winTemplateCopy.width > maxWidth)
         {
-            winTemplateCopy.width = r1;
+            winTemplateCopy.width = maxWidth;
         }
         if (winTemplateCopy.tilemapLeft + winTemplateCopy.width > 29)
         {
             winTemplateCopy.tilemapLeft = max(29 - winTemplateCopy.width, 0);
         }
-        *arg1 = AddWindow(&winTemplateCopy);
-        DrawStdWindowFrame(*arg1, FALSE);
+        *windowId = AddWindow(&winTemplateCopy);
+        DrawStdWindowFrame(*windowId, FALSE);
         gMultiuseListMenuTemplate = *menuTemplate;
-        gMultiuseListMenuTemplate.windowId = *arg1;
-        *arg2 = ListMenuInit(&gMultiuseListMenuTemplate, 0, 0);
-        CopyWindowToVram(*arg1, TRUE);
-        (*arg0)++;
+        gMultiuseListMenuTemplate.windowId = *windowId;
+        *listMenuId = ListMenuInit(&gMultiuseListMenuTemplate, 0, 0);
+        CopyWindowToVram(*windowId, TRUE);
+        (*state)++;
         break;
     case 1:
-        r8 = ListMenu_ProcessInput(*arg2);
+        input = ListMenu_ProcessInput(*listMenuId);
         if (({gMain.newKeys & A_BUTTON;}))
         {
-            DestroyListMenuTask(*arg2, NULL, NULL);
-            ClearStdWindowAndFrame(*arg1, TRUE);
-            RemoveWindow(*arg1);
-            *arg0 = 0;
-            return r8;
+            DestroyListMenuTask(*listMenuId, NULL, NULL);
+            ClearStdWindowAndFrame(*windowId, TRUE);
+            RemoveWindow(*windowId);
+            *state = 0;
+            return input;
         }
         else if (({gMain.newKeys & B_BUTTON;}))
         {
-            DestroyListMenuTask(*arg2, NULL, NULL);
-            ClearStdWindowAndFrame(*arg1, TRUE);
-            RemoveWindow(*arg1);
-            *arg0 = 0;
+            DestroyListMenuTask(*listMenuId, NULL, NULL);
+            ClearStdWindowAndFrame(*windowId, TRUE);
+            RemoveWindow(*windowId);
+            *state = 0;
             return -2;
         }
         break;
@@ -3510,49 +3550,49 @@ s32 sub_8017178(u8 *arg0, u8 *arg1, u8 *arg2, const struct WindowTemplate *winTe
     return -1;
 }
 
-s32 sub_80172A0(u8 *arg0, u8 *arg1, u8 *arg2, u8 *arg3, const struct WindowTemplate *winTemplate, const struct ListMenuTemplate *menuTemplate, struct UnkStruct_Main0 *arg6)
+static s32 TradeBoardMenuHandler(u8 *state, u8 *windowId, u8 *listMenuId, u8 *tradeBoardWindowId, const struct WindowTemplate *winTemplate, const struct ListMenuTemplate *menuTemplate, struct UnkStruct_Main0 *traders)
 {
     s32 input;
-    s32 r4;
+    s32 idx;
 
-    switch (*arg0)
+    switch (*state)
     {
     case 0:
-        *arg3 = sub_8017118(&gUnknown_082F0344);
-        *arg1 = AddWindow(winTemplate);
-        DrawStdWindowFrame(*arg1, FALSE);
+        *tradeBoardWindowId = CreateTradeBoardWindow(&gUnknown_082F0344);
+        *windowId = AddWindow(winTemplate);
+        DrawStdWindowFrame(*windowId, FALSE);
         gMultiuseListMenuTemplate = *menuTemplate;
-        gMultiuseListMenuTemplate.windowId = *arg1;
-        *arg2 = ListMenuInit(&gMultiuseListMenuTemplate, 0, 1);
-        (*arg0)++;
+        gMultiuseListMenuTemplate.windowId = *windowId;
+        *listMenuId = ListMenuInit(&gMultiuseListMenuTemplate, 0, 1);
+        (*state)++;
         break;
     case 1:
-        CopyWindowToVram(*arg1, TRUE);
-        (*arg0)++;
+        CopyWindowToVram(*windowId, TRUE);
+        (*state)++;
         break;
     case 2:
         // Register swap r1 <---> r2
-        input = ListMenu_ProcessInput(*arg2);
+        input = ListMenu_ProcessInput(*listMenuId);
         if (({gMain.newKeys & (A_BUTTON | B_BUTTON);}))
         {
             if (input == 8 || ({gMain.newKeys & B_BUTTON;}))
             {
-                DestroyListMenuTask(*arg2, NULL, NULL);
-                RemoveWindow(*arg1);
-                sub_8017168(*arg3);
-                *arg0 = 0;
+                DestroyListMenuTask(*listMenuId, NULL, NULL);
+                RemoveWindow(*windowId);
+                DeleteTradeBoardWindow(*tradeBoardWindowId);
+                *state = 0;
                 return -2;
             }
             else
             {
-                r4 = sub_8017CB0(arg6->arr, input);
-                if (r4 >= 0)
+                idx = GetIndexOfNthTradeBoardOffer(traders->arr, input);
+                if (idx >= 0)
                 {
-                    DestroyListMenuTask(*arg2, NULL, NULL);
-                    RemoveWindow(*arg1);
-                    sub_8017168(*arg3);
-                    *arg0 = 0;
-                    return r4;
+                    DestroyListMenuTask(*listMenuId, NULL, NULL);
+                    RemoveWindow(*windowId);
+                    DeleteTradeBoardWindow(*tradeBoardWindowId);
+                    *state = 0;
+                    return idx;
                 }
                 else
                 {
@@ -3565,127 +3605,128 @@ s32 sub_80172A0(u8 *arg0, u8 *arg1, u8 *arg2, u8 *arg3, const struct WindowTempl
 
     return -1;
 }
-void sub_80173B0(void)
+
+static void UR_ClearBg0(void)
 {
     FillBgTilemapBufferRect(0, 0, 0, 0, 32, 32, 0);
     CopyBgTilemapBufferToVram(0);
 }
 
-void sub_80173D4(void)
+static void JoinGroup_EnableScriptContexts(void)
 {
     EnableBothScriptContexts();
 }
 
-void sub_80173E0(u8 windowId, u8 arg1, const u8 *str, u8 arg3, u8 arg4, u8 arg5)
+static void UR_AddTextPrinterParameterized(u8 windowId, u8 fontId, const u8 *str, u8 x, u8 y, u8 colorIdx)
 {
-    struct TextPrinterTemplate sp0;
+    struct TextPrinterTemplate printerTemplate;
 
-    sp0.currentChar = str;
-    sp0.windowId = windowId;
-    sp0.fontId = arg1;
-    sp0.x = arg3;
-    sp0.y = arg4;
-    sp0.currentX = arg3;
-    sp0.currentY = arg4;
-    sp0.unk = 0;
+    printerTemplate.currentChar = str;
+    printerTemplate.windowId = windowId;
+    printerTemplate.fontId = fontId;
+    printerTemplate.x = x;
+    printerTemplate.y = y;
+    printerTemplate.currentX = x;
+    printerTemplate.currentY = y;
+    printerTemplate.unk = 0;
 
     gTextFlags.useAlternateDownArrow = FALSE;
-    switch (arg5)
+    switch (colorIdx)
     {
-    case 0:
-        sp0.letterSpacing = 0;
-        sp0.lineSpacing = 0;
-        sp0.fgColor = 2;
-        sp0.bgColor = 1;
-        sp0.shadowColor = 3;
+    case UR_COLOR_DKE_WHT_LTE:
+        printerTemplate.letterSpacing = 0;
+        printerTemplate.lineSpacing = 0;
+        printerTemplate.fgColor = TEXT_COLOR_DARK_GREY;
+        printerTemplate.bgColor = TEXT_COLOR_WHITE;
+        printerTemplate.shadowColor = TEXT_COLOR_LIGHT_GREY;
         break;
-    case 1:
-        sp0.letterSpacing = 0;
-        sp0.lineSpacing = 0;
-        sp0.fgColor = 4;
-        sp0.bgColor = 1;
-        sp0.shadowColor = 5;
+    case UR_COLOR_RED_WHT_LTR:
+        printerTemplate.letterSpacing = 0;
+        printerTemplate.lineSpacing = 0;
+        printerTemplate.fgColor = TEXT_COLOR_RED;
+        printerTemplate.bgColor = TEXT_COLOR_WHITE;
+        printerTemplate.shadowColor = TEXT_COLOR_LIGHT_RED;
         break;
-    case 2:
-        sp0.letterSpacing = 0;
-        sp0.lineSpacing = 0;
-        sp0.fgColor = 6;
-        sp0.bgColor = 1;
-        sp0.shadowColor = 7;
+    case UR_COLOR_GRN_WHT_LTG:
+        printerTemplate.letterSpacing = 0;
+        printerTemplate.lineSpacing = 0;
+        printerTemplate.fgColor = TEXT_COLOR_GREEN;
+        printerTemplate.bgColor = TEXT_COLOR_WHITE;
+        printerTemplate.shadowColor = TEXT_COLOR_LIGHT_GREEN;
         break;
-    case 3:
-        sp0.letterSpacing = 0;
-        sp0.lineSpacing = 0;
-        sp0.fgColor = 1;
-        sp0.bgColor = 1;
-        sp0.shadowColor = 3;
+    case UR_COLOR_WHT_WHT_LTE:
+        printerTemplate.letterSpacing = 0;
+        printerTemplate.lineSpacing = 0;
+        printerTemplate.fgColor = TEXT_COLOR_WHITE;
+        printerTemplate.bgColor = TEXT_COLOR_WHITE;
+        printerTemplate.shadowColor = TEXT_COLOR_LIGHT_GREY;
         break;
-    case 4:
-        sp0.letterSpacing = 0;
-        sp0.lineSpacing = 0;
-        sp0.fgColor = 1;
-        sp0.bgColor = 2;
-        sp0.shadowColor = 3;
+    case UR_COLOR_WHT_DKE_LTE:
+        printerTemplate.letterSpacing = 0;
+        printerTemplate.lineSpacing = 0;
+        printerTemplate.fgColor = TEXT_COLOR_WHITE;
+        printerTemplate.bgColor = TEXT_COLOR_DARK_GREY;
+        printerTemplate.shadowColor = TEXT_COLOR_LIGHT_GREY;
         break;
-    case 5:
-        sp0.letterSpacing = 0;
-        sp0.lineSpacing = 0;
-        sp0.fgColor = 7;
-        sp0.bgColor = 15;
-        sp0.shadowColor = 9;
+    case UR_COLOR_GRN_DN6_LTB:
+        printerTemplate.letterSpacing = 0;
+        printerTemplate.lineSpacing = 0;
+        printerTemplate.fgColor = TEXT_COLOR_LIGHT_GREEN;
+        printerTemplate.bgColor = TEXT_DYNAMIC_COLOR_6;
+        printerTemplate.shadowColor = TEXT_COLOR_LIGHT_BLUE;
         break;
-    case 6:
-        sp0.letterSpacing = 0;
-        sp0.lineSpacing = 0;
-        sp0.fgColor = 14;
-        sp0.bgColor = 15;
-        sp0.shadowColor = 9;
+    case UR_COLOR_DN5_DN6_LTB:
+        printerTemplate.letterSpacing = 0;
+        printerTemplate.lineSpacing = 0;
+        printerTemplate.fgColor = TEXT_DYNAMIC_COLOR_5;
+        printerTemplate.bgColor = TEXT_DYNAMIC_COLOR_6;
+        printerTemplate.shadowColor = TEXT_COLOR_LIGHT_BLUE;
         break;
     }
 
-    AddTextPrinter(&sp0, 0xFF, NULL);
+    AddTextPrinter(&printerTemplate, 0xFF, NULL);
 }
 
-void sub_8017580(struct UnkStruct_x20 *arg0, u8 count)
+static void ClearUnkStruct_x20Array(struct UnkStruct_x20 *arr, u8 count)
 {
     s32 i;
 
     for (i = 0; i < count; i++)
     {
-        arg0[i].unk = gUnknown_082F045C;
-        arg0[i].field_18 = 0xFF;
-        arg0[i].field_1A_0 = 0;
-        arg0[i].field_1A_1 = 0;
-        arg0[i].field_1B = 0;
+        arr[i].gname_uname = sWirelessGnameUnamePair_Dummy;
+        arr[i].field_18 = 0xFF;
+        arr[i].groupScheduledAnim = UNION_ROOM_SPAWN_NONE;
+        arr[i].field_1A_1 = 0;
+        arr[i].field_1B = 0;
     }
 }
 
-void sub_80175EC(struct UnkStruct_Main4 *arg0, u8 count)
+static void ClearUnkStruct_x1CArray(struct UnkStruct_Main4 *main4, u8 count)
 {
     s32 i;
 
-    for (i = 0; i < 4; i++)
+    for (i = 0; i < RFU_CHILD_MAX; i++)
     {
-        arg0->arr[i].unk0 = gUnknown_082F045C;
-        arg0->arr[i].unk18 = 0;
+        main4->arr[i].gname_uname = sWirelessGnameUnamePair_Dummy;
+        main4->arr[i].active = FALSE;
     }
 }
 
-bool8 sub_8017630(struct UnkStruct_Shared* arg0, const struct UnkStruct_Shared* arg1)
+static bool8 AreGnameUnameDifferent(struct WirelessGnameUnamePair* pair1, const struct WirelessGnameUnamePair* pair2)
 {
     s32 i;
 
     for (i = 0; i < 2; i++)
     {
-        if (arg0->field_0.unk_00.playerTrainerId[i] != arg1->field_0.unk_00.playerTrainerId[i])
+        if (pair1->gname.unk_00.playerTrainerId[i] != pair2->gname.unk_00.playerTrainerId[i])
         {
             return TRUE;
         }
     }
 
-    for (i = 0; i < 8; i++)
+    for (i = 0; i < PLAYER_NAME_LENGTH + 1; i++)
     {
-        if (arg0->playerName[i] != arg1->playerName[i])
+        if (pair1->playerName[i] != pair2->playerName[i])
         {
             return TRUE;
         }
@@ -3694,34 +3735,34 @@ bool8 sub_8017630(struct UnkStruct_Shared* arg0, const struct UnkStruct_Shared*
     return FALSE;
 }
 
-bool32 sub_8017678(struct UnkStruct_Shared *arg0, struct UnkStruct_Shared *arg1)
+static bool32 AreUnionRoomPlayerGnamesDifferent(struct WirelessGnameUnamePair *pair1, struct WirelessGnameUnamePair *pair2)
 {
     s32 i;
 
-    if (arg0->field_0.activity != arg1->field_0.activity)
+    if (pair1->gname.activity != pair2->gname.activity)
     {
         return TRUE;
     }
 
-    if (arg0->field_0.started != arg1->field_0.started)
+    if (pair1->gname.started != pair2->gname.started)
     {
         return TRUE;
     }
 
-    for (i = 0; i < 4; i++)
+    for (i = 0; i < RFU_CHILD_MAX; i++)
     {
-        if (arg0->field_0.child_sprite_gender[i] != arg1->field_0.child_sprite_gender[i])
+        if (pair1->gname.child_sprite_gender[i] != pair2->gname.child_sprite_gender[i])
         {
             return TRUE;
         }
     }
 
-    if (arg0->field_0.species != arg1->field_0.species)
+    if (pair1->gname.species != pair2->gname.species)
     {
         return TRUE;
     }
 
-    if (arg0->field_0.type != arg1->field_0.type)
+    if (pair1->gname.type != pair2->gname.type)
     {
         return TRUE;
     }
@@ -3729,38 +3770,38 @@ bool32 sub_8017678(struct UnkStruct_Shared *arg0, struct UnkStruct_Shared *arg1)
     return FALSE;
 }
 
-u32 sub_80176E4(struct UnkStruct_x20 *arg0, struct UnkStruct_x1C *arg1)
+static u32 Findx20Inx1CArray(struct UnkStruct_x20 *arg0, struct UnkStruct_x1C *arg1)
 {
     u8 result = 0xFF;
     s32 i;
 
-    for (i = 0; i < 4; i++)
+    for (i = 0; i < RFU_CHILD_MAX; i++)
     {
-        if (arg1[i].unk18 && !sub_8017630(&arg0->unk, &arg1[i].unk0))
+        if (arg1[i].active && !AreGnameUnameDifferent(&arg0->gname_uname, &arg1[i].gname_uname))
         {
             result = i;
-            arg1[i].unk18 = FALSE;
+            arg1[i].active = FALSE;
         }
     }
 
     return result;
 }
 
-u8 sub_8017734(struct UnkStruct_x20 *arg0, struct UnkStruct_x1C *arg1, u8 arg2)
+static u8 Appendx1Ctox20(struct UnkStruct_x20 *arg0, struct UnkStruct_x1C *arg1, u8 arg2)
 {
     s32 i;
 
-    if (arg1->unk18)
+    if (arg1->active)
     {
         for (i = 0; i < arg2; i++)
         {
-            if (arg0[i].field_1A_0 == 0)
+            if (arg0[i].groupScheduledAnim == UNION_ROOM_SPAWN_NONE)
             {
-                arg0[i].unk = arg1->unk0;
+                arg0[i].gname_uname = arg1->gname_uname;
                 arg0[i].field_18 = 0;
-                arg0[i].field_1A_0 = 1;
+                arg0[i].groupScheduledAnim = UNION_ROOM_SPAWN_IN;
                 arg0[i].field_1B = 64;
-                arg1->unk18 = FALSE;
+                arg1->active = FALSE;
                 return i;
             }
         }
@@ -3769,126 +3810,123 @@ u8 sub_8017734(struct UnkStruct_x20 *arg0, struct UnkStruct_x1C *arg1, u8 arg2)
     return 0xFF;
 }
 
-void sub_80177B8(u8 arg0, u8 arg1, u8 arg2, struct UnkStruct_x20 *arg3, u8 arg4, u8 id)
+static void PrintUnionRoomGroupOnWindow(u8 windowId, u8 x, u8 y, struct UnkStruct_x20 *group, u8 colorIdx, u8 id)
 {
-    u8 r2;
-    u8 sp0[6];
+    u8 activity;
+    u8 trainerId[6];
 
     ConvertIntToDecimalStringN(gStringVar4, id + 1, STR_CONV_MODE_LEADING_ZEROS, 2);
     StringAppend(gStringVar4, sText_Colon);
-    sub_80173E0(arg0, 1, gStringVar4, arg1, arg2, 0);
-    arg1 += 18;
-    r2 = arg3->unk.field_0.activity;
-    if (arg3->field_1A_0 == 1 && !(r2 & 0x40))
+    UR_AddTextPrinterParameterized(windowId, 1, gStringVar4, x, y, 0);
+    x += 18;
+    activity = group->gname_uname.gname.activity;
+    if (group->groupScheduledAnim == UNION_ROOM_SPAWN_IN && !(activity & IN_UNION_ROOM))
     {
-        sub_8018404(gStringVar4, arg3);
-        sub_80173E0(arg0, 1, gStringVar4, arg1, arg2, arg4);
-        ConvertIntToDecimalStringN(sp0, arg3->unk.field_0.unk_00.playerTrainerId[0] | (arg3->unk.field_0.unk_00.playerTrainerId[1] << 8), STR_CONV_MODE_LEADING_ZEROS, 5);
+        IntlConvPartnerUname7(gStringVar4, group);
+        UR_AddTextPrinterParameterized(windowId, 1, gStringVar4, x, y, colorIdx);
+        ConvertIntToDecimalStringN(trainerId, group->gname_uname.gname.unk_00.playerTrainerId[0] | (group->gname_uname.gname.unk_00.playerTrainerId[1] << 8), STR_CONV_MODE_LEADING_ZEROS, 5);
         StringCopy(gStringVar4, sText_ID);
-        StringAppend(gStringVar4, sp0);
-        sub_80173E0(arg0, 1, gStringVar4, GetStringRightAlignXOffset(1, gStringVar4, 0x88), arg2, arg4);
+        StringAppend(gStringVar4, trainerId);
+        UR_AddTextPrinterParameterized(windowId, 1, gStringVar4, GetStringRightAlignXOffset(1, gStringVar4, 0x88), y, colorIdx);
     }
 }
 
-void sub_80178A0(u8 arg0, u8 arg1, u8 arg2, struct UnkStruct_x20 *arg3, u8 arg4, u8 id)
+static void PrintGroupMemberCandidateOnWindowWithColor(u8 windowId, u8 x, u8 y, struct UnkStruct_x20 *group, u8 colorIdx, u8 id)
 {
-    u8 sp0[6];
+    u8 trainerId[6];
 
-    if (arg3->field_1A_0 == 1)
+    if (group->groupScheduledAnim == UNION_ROOM_SPAWN_IN)
     {
-        sub_8018404(gStringVar4, arg3);
-        sub_80173E0(arg0, 1, gStringVar4, arg1, arg2, arg4);
-        ConvertIntToDecimalStringN(sp0, arg3->unk.field_0.unk_00.playerTrainerId[0] | (arg3->unk.field_0.unk_00.playerTrainerId[1] << 8), STR_CONV_MODE_LEADING_ZEROS, 5);
+        IntlConvPartnerUname7(gStringVar4, group);
+        UR_AddTextPrinterParameterized(windowId, 1, gStringVar4, x, y, colorIdx);
+        ConvertIntToDecimalStringN(trainerId, group->gname_uname.gname.unk_00.playerTrainerId[0] | (group->gname_uname.gname.unk_00.playerTrainerId[1] << 8), STR_CONV_MODE_LEADING_ZEROS, 5);
         StringCopy(gStringVar4, sText_ID);
-        StringAppend(gStringVar4, sp0);
-        sub_80173E0(arg0, 1, gStringVar4, GetStringRightAlignXOffset(1, gStringVar4, 0x68), arg2, arg4);
+        StringAppend(gStringVar4, trainerId);
+        UR_AddTextPrinterParameterized(windowId, 1, gStringVar4, GetStringRightAlignXOffset(1, gStringVar4, 0x68), y, colorIdx);
     }
 }
 
-bool32 sub_8017940(void)
+static bool32 PlayerIsTalkingToUnionRoomAide(void)
 {
     s16 x, y;
     GetXYCoordsOneStepInFrontOfPlayer(&x, &y);
+
     if (x != 9)
-    {
         return FALSE;
-    }
+
     if (y != 8)
-    {
         return FALSE;
-    }
+
     if (gPlayerAvatar.tileTransitionState == 2 || gPlayerAvatar.tileTransitionState == 0)
-    {
         return TRUE;
-    }
 
     return FALSE;
 }
 
-u32 sub_8017984(s32 arg0)
+static u32 GetResponseIdx_InviteToURoomActivity(s32 activity)
 {
-    switch (arg0)
+    switch (activity)
     {
-    case 5:
+    case ACTIVITY_CHAT:
         return 1;
-    case 4:
+    case ACTIVITY_TRADE:
         return 2;
-    case 8:
+    case ACTIVITY_CARD:
         return 3;
-    case 3:
+    case ACTIVITY_BATTLE_MULTI:
     default:
         return 0;
     }
 }
 
-u32 sub_80179AC(struct UnkStruct_x20 *arg0)
+static u32 ConvPartnerUnameAndGetWhetherMetAlready(struct UnkStruct_x20 *arg0)
 {
-    u8 sp0[30];
-    sub_8018404(sp0, arg0);
-    return sub_800E540(ReadAsU16(arg0->unk.field_0.unk_00.playerTrainerId), sp0);
+    u8 name[30];
+    IntlConvPartnerUname7(name, arg0);
+    return PlayerHasMetTrainerBefore(ReadAsU16(arg0->gname_uname.gname.unk_00.playerTrainerId), name);
 }
 
-s32 sub_80179D4(struct UnkStruct_Main0 *arg0, u8 arg1, u8 arg2, u32 playerGender)
+static s32 UnionRoomGetPlayerInteractionResponse(struct UnkStruct_Main0 *main0, bool8 overrideGender, u8 playerIdx, u32 playerGender)
 {
-    bool32 r2;
+    bool32 metBefore;
 
-    struct UnkStruct_x20 * r5 = &arg0->arr[arg2];
+    struct UnkStruct_x20 * r5 = &main0->arr[playerIdx];
 
-    if (!r5->unk.field_0.started && arg1 == 0)
+    if (!r5->gname_uname.gname.started && !overrideGender)
     {
-        sub_8018404(gStringVar1, r5);
-        r2 = sub_800E540(ReadAsU16(r5->unk.field_0.unk_00.playerTrainerId), gStringVar1);
-        if (r5->unk.field_0.activity == 0x45)
+        IntlConvPartnerUname7(gStringVar1, r5);
+        metBefore = PlayerHasMetTrainerBefore(ReadAsU16(r5->gname_uname.gname.unk_00.playerTrainerId), gStringVar1);
+        if (r5->gname_uname.gname.activity == (ACTIVITY_CHAT | IN_UNION_ROOM))
         {
-            StringExpandPlaceholders(gStringVar4, sJoinChatTexts[r2][playerGender]);
+            StringExpandPlaceholders(gStringVar4, sJoinChatTexts[metBefore][playerGender]);
             return 2;
         }
         else
         {
-            sub_8017020(sCommunicatingWaitTexts[r2]);
+            UR_PrintFieldMessage(sCommunicatingWaitTexts[metBefore]);
             return 1;
         }
     }
     else
     {
-        sub_8018404(gStringVar1, r5);
-        if (arg1 != 0)
+        IntlConvPartnerUname7(gStringVar1, r5);
+        if (overrideGender)
         {
-            playerGender = (r5->unk.field_0.unk_00.playerTrainerId[arg1 + 1] >> 3) & 1;
+            playerGender = (r5->gname_uname.gname.unk_00.playerTrainerId[overrideGender + 1] >> 3) & 1;
         }
-        switch (r5->unk.field_0.activity & 0x3F)
+        switch (r5->gname_uname.gname.activity & 0x3F)
         {
-        case 1:
-            StringExpandPlaceholders(gStringVar4, sBattleReactionTexts[playerGender][Random() % 4]);
+        case ACTIVITY_BATTLE_SINGLE:
+            StringExpandPlaceholders(gStringVar4, sBattleReactionTexts[playerGender][Random() % ARRAY_COUNT(sBattleReactionTexts[0])]);
             break;
-        case 4:
+        case ACTIVITY_TRADE:
             StringExpandPlaceholders(gStringVar4, sTradeReactionTexts[playerGender][Random() % 2]);
             break;
-        case 5:
-            StringExpandPlaceholders(gStringVar4, sChatReactionTexts[playerGender][Random() % 4]);
+        case ACTIVITY_CHAT:
+            StringExpandPlaceholders(gStringVar4, sChatReactionTexts[playerGender][Random() % ARRAY_COUNT(sChatReactionTexts[0])]);
             break;
-        case 8:
-            StringExpandPlaceholders(gStringVar4, sTrainerCardReactionTexts[playerGender][Random() % 2]);
+        case ACTIVITY_CARD:
+            StringExpandPlaceholders(gStringVar4, sTrainerCardReactionTexts[playerGender][Random() % ARRAY_COUNT(sTrainerCardReactionTexts[0])]);
             break;
         default:
             StringExpandPlaceholders(gStringVar4, sText_TrainerAppearsBusy);
@@ -3903,40 +3941,40 @@ void nullsub_14(u8 windowId, s32 itemId, u8 y)
 
 }
 
-void sub_8017B3C(u8 arg0, u8 arg1, struct GFtgtGname * arg2, const u8 * str, u8 arg4)
+static void TradeBoardPrintItemInfo(u8 windowId, u8 y, struct GFtgtGname * gname, const u8 * uname, u8 colorIdx)
 {
-    u8 sp8[4];
-    u16 r8 = arg2->species;
-    u8 r7 = arg2->type;
-    u8 r9 = arg2->level;
+    u8 levelStr[4];
+    u16 species = gname->species;
+    u8 type = gname->type;
+    u8 level = gname->level;
 
-    sub_80173E0(arg0, 1, str, 8, arg1, arg4);
-    if (r8 == SPECIES_EGG)
+    UR_AddTextPrinterParameterized(windowId, 1, uname, 8, y, colorIdx);
+    if (species == SPECIES_EGG)
     {
-        sub_80173E0(arg0, 1, sText_EggTrade, 0x44, arg1, arg4);
+        UR_AddTextPrinterParameterized(windowId, 1, sText_EggTrade, 0x44, y, colorIdx);
     }
     else
     {
-        blit_move_info_icon(arg0, r7 + 1, 0x44, arg1);
-        sub_80173E0(arg0, 1, gSpeciesNames[r8], 0x76, arg1, arg4);
-        ConvertIntToDecimalStringN(sp8, r9, STR_CONV_MODE_RIGHT_ALIGN, 3);
-        sub_80173E0(arg0, 1, sp8, 0xC6, arg1, arg4);
+        blit_move_info_icon(windowId, type + 1, 0x44, y);
+        UR_AddTextPrinterParameterized(windowId, 1, gSpeciesNames[species], 0x76, y, colorIdx);
+        ConvertIntToDecimalStringN(levelStr, level, STR_CONV_MODE_RIGHT_ALIGN, 3);
+        UR_AddTextPrinterParameterized(windowId, 1, levelStr, 0xC6, y, colorIdx);
     }
 }
 
-void sub_8017BE8(u8 windowId, s32 itemId, u8 y)
+static void TradeBoardListMenuItemPrintFunc(u8 windowId, s32 itemId, u8 y)
 {
-    struct UnkStruct_Leader *leader = gUnknown_02022C30.leader;
+    struct WirelessLink_Leader *data = sWirelessLinkMain.leader;
     struct GFtgtGname *rfu;
     s32 i, j;
-    u8 sp4[11];
+    u8 playerName[11];
 
-    if (itemId == -3 && y == gUnknown_082F03A4.upText_Y)
+    if (itemId == -3 && y == sTradeBoardListMenuTemplate.upText_Y)
     {
-        rfu = sub_800F7DC();
+        rfu = GetHostRFUtgtGname();
         if (rfu->species != SPECIES_NONE)
         {
-            sub_8017B3C(windowId, y, rfu, gSaveBlock2Ptr->playerName, 5);
+            TradeBoardPrintItemInfo(windowId, y, rfu, gSaveBlock2Ptr->playerName, 5);
         }
     }
     else
@@ -3944,32 +3982,32 @@ void sub_8017BE8(u8 windowId, s32 itemId, u8 y)
         j = 0;
         for (i = 0; i < 8; i++)
         {
-            if (leader->field_0->arr[i].field_1A_0 == 1 && leader->field_0->arr[i].unk.field_0.species != SPECIES_NONE)
+            if (data->field_0->arr[i].groupScheduledAnim == UNION_ROOM_SPAWN_IN && data->field_0->arr[i].gname_uname.gname.species != SPECIES_NONE)
             {
                 j++;
             }
             if (j == itemId + 1)
             {
-                sub_8018404(sp4, &leader->field_0->arr[i]);
-                sub_8017B3C(windowId, y, &leader->field_0->arr[i].unk.field_0, sp4, 6);
+                IntlConvPartnerUname7(playerName, &data->field_0->arr[i]);
+                TradeBoardPrintItemInfo(windowId, y, &data->field_0->arr[i].gname_uname.gname, playerName, 6);
                 break;
             }
         }
     }
 }
 
-s32 sub_8017CB0(struct UnkStruct_x20 * arg, s32 arg1)
+static s32 GetIndexOfNthTradeBoardOffer(struct UnkStruct_x20 * arg, s32 n)
 {
     s32 i;
     s32 j = 0;
 
     for (i = 0; i < 8; i++)
     {
-        if (arg[i].field_1A_0 == 1 && arg[i].unk.field_0.species != SPECIES_NONE)
+        if (arg[i].groupScheduledAnim == UNION_ROOM_SPAWN_IN && arg[i].gname_uname.gname.species != SPECIES_NONE)
         {
             j++;
         }
-        if (j == arg1 + 1)
+        if (j == n + 1)
         {
             return i;
         }
@@ -3978,12 +4016,12 @@ s32 sub_8017CB0(struct UnkStruct_x20 * arg, s32 arg1)
     return -1;
 }
 
-s32 sub_8017CF8(s32 arg1, struct UnkStruct_Main0 *arg0)
+static s32 GetUnionRoomPlayerGender(s32 playerIdx, struct UnkStruct_Main0 *main0)
 {
-    return arg0->arr[arg1].unk.field_0.playerGender;
+    return main0->arr[playerIdx].gname_uname.gname.playerGender;
 }
 
-s32 sub_8017D04(u32 type, u32 species)
+static s32 IsRequestedTypeOrEggInPlayerParty(u32 type, u32 species)
 {
     s32 i;
 
@@ -3994,10 +4032,10 @@ s32 sub_8017D04(u32 type, u32 species)
             species = GetMonData(&gPlayerParty[i], MON_DATA_SPECIES2);
             if (species == SPECIES_EGG)
             {
-                return 0;
+                return UR_TRADE_MATCH;
             }
         }
-        return 2;
+        return UR_TRADE_NOEGG;
     }
     else
     {
@@ -4006,77 +4044,77 @@ s32 sub_8017D04(u32 type, u32 species)
             species = GetMonData(&gPlayerParty[i], MON_DATA_SPECIES2);
             if (gBaseStats[species].type1 == type || gBaseStats[species].type2 == type)
             {
-                return 0;
+                return UR_TRADE_MATCH;
             }
         }
-        return 1;
+        return UR_TRADE_NOTYPE;
     }
 }
 
-void sub_8017D9C(u8 *dst, s32 arg1, u32 playerGender)
+static void GetURoomActivityRejectMsg(u8 *dst, s32 acitivty, u32 playerGender)
 {
-    switch (arg1)
+    switch (acitivty)
     {
-    case 0x41:
+    case ACTIVITY_BATTLE_SINGLE | IN_UNION_ROOM:
         StringExpandPlaceholders(dst, sBattleDeclinedTexts[playerGender]);
         break;
-    case 0x45:
+    case ACTIVITY_CHAT | IN_UNION_ROOM:
         StringExpandPlaceholders(dst, sChatDeclinedTexts[playerGender]);
         break;
-    case 0x44:
+    case ACTIVITY_TRADE | IN_UNION_ROOM:
         StringExpandPlaceholders(dst, sText_TradeOfferRejected);
         break;
-    case 0x48:
+    case ACTIVITY_CARD | IN_UNION_ROOM:
         StringExpandPlaceholders(dst, sShowTrainerCardDeclinedTexts[playerGender]);
         break;
     }
 }
 
-void sub_8017E00(u8 *dst, u8 arg1)
+static void GetURoomActivityStartMsg(u8 *dst, u8 acitivty)
 {
     u8 mpId = GetMultiplayerId();
     u8 gender = gLinkPlayers[mpId ^ 1].gender;
 
-    switch (arg1)
+    switch (acitivty)
     {
-    case 0x41:
+    case ACTIVITY_BATTLE_SINGLE | IN_UNION_ROOM:
         StringCopy(dst, sStartActivityTexts[mpId][gender][0]);
         break;
-    case 0x44:
+    case ACTIVITY_TRADE | IN_UNION_ROOM:
         StringCopy(dst, sStartActivityTexts[mpId][gender][2]);
         break;
-    case 0x45:
+    case ACTIVITY_CHAT | IN_UNION_ROOM:
         StringCopy(dst, sStartActivityTexts[mpId][gender][1]);
         break;
     }
 }
 
-s32 sub_8017EA0(u8 *dst, u32 gender, u16 *arg2, struct UnkStruct_URoom *arg3)
+static s32 GetChatLeaderActionRequestMessage(u8 *dst, u32 gender, u16 *activityData, struct WirelessLink_URoom *uroom)
 {
     s32 result = 0;
     u16 species = SPECIES_NONE;
     s32 i;
 
-    switch (arg2[0])
+    switch (activityData[0])
     {
-    case 0x41:
+    case ACTIVITY_BATTLE_SINGLE | IN_UNION_ROOM:
         StringExpandPlaceholders(dst, sText_BattleChallenge);
         result = 1;
         break;
-    case 0x45:
+    case ACTIVITY_CHAT | IN_UNION_ROOM:
         StringExpandPlaceholders(dst, sText_ChatInvitation);
         result = 1;
         break;
-    case 0x44:
-        ConvertIntToDecimalStringN(arg3->field_58 + 0x00, sUnionRoomTrade.playerLevel, STR_CONV_MODE_LEFT_ALIGN, 3);
-        StringCopy(arg3->field_58 + 0x10, gSpeciesNames[sUnionRoomTrade.playerSpecies]);
-        for (i = 0; i < 4; i++)
+    case ACTIVITY_TRADE | IN_UNION_ROOM:
+        ConvertIntToDecimalStringN(uroom->activityRequestStrbufs[0], sUnionRoomTrade.playerLevel, STR_CONV_MODE_LEFT_ALIGN, 3);
+        StringCopy(uroom->activityRequestStrbufs[1], gSpeciesNames[sUnionRoomTrade.playerSpecies]);
+        for (i = 0; i < RFU_CHILD_MAX; i++)
         {
             if (gRfuLinkStatus->partner[i].serialNo == 2)
             {
-                ConvertIntToDecimalStringN(arg3->field_58 + 0x20, arg2[2], STR_CONV_MODE_LEFT_ALIGN, 3);
-                StringCopy(arg3->field_58 + 0x30, gSpeciesNames[arg2[1]]);
-                species = arg2[1];
+                ConvertIntToDecimalStringN(uroom->activityRequestStrbufs[2], activityData[2], STR_CONV_MODE_LEFT_ALIGN, 3);
+                StringCopy(uroom->activityRequestStrbufs[3], gSpeciesNames[activityData[1]]);
+                species = activityData[1];
                 break;
             }
         }
@@ -4086,19 +4124,19 @@ s32 sub_8017EA0(u8 *dst, u32 gender, u16 *arg2, struct UnkStruct_URoom *arg3)
         }
         else
         {
-            for (i = 0; i < 4; i++)
+            for (i = 0; i < RFU_CHILD_MAX; i++)
             {
-                DynamicPlaceholderTextUtil_SetPlaceholderPtr(i, arg3->field_58 + 0x10 * i);
+                DynamicPlaceholderTextUtil_SetPlaceholderPtr(i, uroom->activityRequestStrbufs[i]);
             }
             DynamicPlaceholderTextUtil_ExpandPlaceholders(dst, sText_OfferToTradeMon);
         }
         result = 1;
         break;
-    case 0x48:
+    case ACTIVITY_CARD | IN_UNION_ROOM:
         StringExpandPlaceholders(dst, sText_ShowTrainerCard);
         result = 1;
         break;
-    case 0x40:
+    case IN_UNION_ROOM:
         StringExpandPlaceholders(dst, sText_ChatDropped);
         result = 2;
         break;
@@ -4107,18 +4145,18 @@ s32 sub_8017EA0(u8 *dst, u32 gender, u16 *arg2, struct UnkStruct_URoom *arg3)
     return result;
 }
 
-bool32 sub_8017FD8(struct UnkStruct_URoom *arg0)
+static bool32 PollPartnerYesNoResponse(struct WirelessLink_URoom *data)
 {
     if (gRecvCmds[0][1] != 0)
     {
-        if (gRecvCmds[0][1] == 0x51)
+        if (gRecvCmds[0][1] == (ACTIVITY_ACCEPT | IN_UNION_ROOM))
         {
-            arg0->field_98 = 0x51;
+            data->partnerYesNoResponse = ACTIVITY_ACCEPT | IN_UNION_ROOM;
             return TRUE;
         }
-        else if (gRecvCmds[0][1] == 0x52)
+        else if (gRecvCmds[0][1] == (ACTIVITY_DECLINE | IN_UNION_ROOM))
         {
-            arg0->field_98 = 0x52;
+            data->partnerYesNoResponse = ACTIVITY_DECLINE | IN_UNION_ROOM;
             return TRUE;
         }
     }
@@ -4132,7 +4170,7 @@ bool32 InUnionRoom(void)
            ? TRUE : FALSE;
 }
 
-bool32 HasAtLeastTwoMonsOfLevel30OrLower(void)
+static bool32 HasAtLeastTwoMonsOfLevel30OrLower(void)
 {
     s32 i;
     s32 count = 0;
@@ -4152,16 +4190,16 @@ bool32 HasAtLeastTwoMonsOfLevel30OrLower(void)
         return FALSE;
 }
 
-static void ResetUnionRoomTrade(struct UnionRoomTrade *arg0)
+static void ResetUnionRoomTrade(struct UnionRoomTrade *uroomTrade)
 {
-    arg0->field_0 = 0;
-    arg0->type = 0;
-    arg0->playerPersonality = 0;
-    arg0->playerSpecies = 0;
-    arg0->playerLevel = 0;
-    arg0->species = 0;
-    arg0->level = 0;
-    arg0->personality = 0;
+    uroomTrade->field_0 = 0;
+    uroomTrade->type = 0;
+    uroomTrade->playerPersonality = 0;
+    uroomTrade->playerSpecies = 0;
+    uroomTrade->playerLevel = 0;
+    uroomTrade->species = 0;
+    uroomTrade->level = 0;
+    uroomTrade->personality = 0;
 }
 
 void Script_ResetUnionRoomTrade(void)
@@ -4228,36 +4266,36 @@ static u32 GetPartyPositionOfRegisteredMon(struct UnionRoomTrade *trade, u8 mult
     return response;
 }
 
-void sub_801818C(bool32 arg0)
+static void HandleCancelTrade(bool32 unlockObjs)
 {
-    sub_80173B0();
+    UR_ClearBg0();
     ScriptContext2_Disable();
-    sub_8098524();
-    gUnknown_02022C2C = 0;
-    if (arg0)
+    UnionRoom_UnlockPlayerAndChatPartner();
+    gPlayerCurrActivity = 0;
+    if (unlockObjs)
     {
         sub_8010FCC(sUnionRoomTrade.type, sUnionRoomTrade.playerSpecies, sUnionRoomTrade.playerLevel);
-        sub_8011090(0x40, 0, 0);
+        UpdateGameDataWithActivitySpriteGendersFlag(IN_UNION_ROOM, 0, 0);
     }
 }
 
-void sub_80181CC(void)
+static void UR_EnableScriptContext2AndFreezeObjectEvents(void)
 {
     ScriptContext2_Enable();
     ScriptFreezeObjectEvents();
 }
 
-u8 sub_80181DC(struct UnkStruct_URoom *arg0)
+static u8 GetActivePartnerSpriteGenderParam(struct WirelessLink_URoom *data)
 {
     u8 retVal = 0x80;
     u8 i;
 
-    for (i = 0; i < 4; i++)
+    for (i = 0; i < RFU_CHILD_MAX; i++)
     {
-        if (arg0->field_C->arr[i].unk18)
+        if (data->field_C->arr[i].active)
         {
-            retVal |= arg0->field_C->arr[i].unk0.field_0.playerGender << 3;
-            retVal |= arg0->field_C->arr[i].unk0.field_0.unk_00.playerTrainerId[0] & 7;
+            retVal |= data->field_C->arr[i].gname_uname.gname.playerGender << 3;
+            retVal |= data->field_C->arr[i].gname_uname.gname.unk_00.playerTrainerId[0] & 7;
             break;
         }
     }
@@ -4265,7 +4303,7 @@ u8 sub_80181DC(struct UnkStruct_URoom *arg0)
     return retVal;
 }
 
-void sub_8018220(u8 *unused, struct UnkStruct_URoom *arg1, bool8 arg2)
+static void ViewURoomPartnerTrainerCard(u8 *unused, struct WirelessLink_URoom *data, bool8 isParent)
 {
     struct TrainerCard *trainerCard = &gTrainerCards[GetMultiplayerId() ^ 1];
     s32 i;
@@ -4273,67 +4311,67 @@ void sub_8018220(u8 *unused, struct UnkStruct_URoom *arg1, bool8 arg2)
 
     DynamicPlaceholderTextUtil_Reset();
 
-    StringCopy(arg1->field_C0[0], gTrainerClassNames[sub_8068BB0()]);
-    DynamicPlaceholderTextUtil_SetPlaceholderPtr(0, arg1->field_C0[0]);
+    StringCopy(data->field_C0[0], gTrainerClassNames[sub_8068BB0()]);
+    DynamicPlaceholderTextUtil_SetPlaceholderPtr(0, data->field_C0[0]);
 
     DynamicPlaceholderTextUtil_SetPlaceholderPtr(1, trainerCard->playerName);
 
-    StringCopy(arg1->field_174, sCardColorTexts[trainerCard->stars]);
-    DynamicPlaceholderTextUtil_SetPlaceholderPtr(2, arg1->field_174);
+    StringCopy(data->field_174, sCardColorTexts[trainerCard->stars]);
+    DynamicPlaceholderTextUtil_SetPlaceholderPtr(2, data->field_174);
 
-    ConvertIntToDecimalStringN(arg1->field_C0[2], trainerCard->caughtMonsCount, STR_CONV_MODE_LEFT_ALIGN, 3);
-    DynamicPlaceholderTextUtil_SetPlaceholderPtr(3, arg1->field_C0[2]);
+    ConvertIntToDecimalStringN(data->field_C0[2], trainerCard->caughtMonsCount, STR_CONV_MODE_LEFT_ALIGN, 3);
+    DynamicPlaceholderTextUtil_SetPlaceholderPtr(3, data->field_C0[2]);
 
-    ConvertIntToDecimalStringN(arg1->field_C0[3], trainerCard->playTimeHours, STR_CONV_MODE_LEFT_ALIGN, 3);
-    ConvertIntToDecimalStringN(arg1->field_C0[4], trainerCard->playTimeMinutes, STR_CONV_MODE_LEADING_ZEROS, 2);
-    DynamicPlaceholderTextUtil_SetPlaceholderPtr(4, arg1->field_C0[3]);
-    DynamicPlaceholderTextUtil_SetPlaceholderPtr(5, arg1->field_C0[4]);
+    ConvertIntToDecimalStringN(data->field_C0[3], trainerCard->playTimeHours, STR_CONV_MODE_LEFT_ALIGN, 3);
+    ConvertIntToDecimalStringN(data->field_C0[4], trainerCard->playTimeMinutes, STR_CONV_MODE_LEADING_ZEROS, 2);
+    DynamicPlaceholderTextUtil_SetPlaceholderPtr(4, data->field_C0[3]);
+    DynamicPlaceholderTextUtil_SetPlaceholderPtr(5, data->field_C0[4]);
 
-    DynamicPlaceholderTextUtil_ExpandPlaceholders(arg1->field_1A4, sText_TrainerCardInfoPage1);
-    StringCopy(gStringVar4, arg1->field_1A4);
+    DynamicPlaceholderTextUtil_ExpandPlaceholders(data->field_1A4, sText_TrainerCardInfoPage1);
+    StringCopy(gStringVar4, data->field_1A4);
 
     n = trainerCard->linkBattleWins;
     if (n > 9999)
     {
         n = 9999;
     }
-    ConvertIntToDecimalStringN(arg1->field_C0[0], n, STR_CONV_MODE_LEFT_ALIGN, 4);
-    DynamicPlaceholderTextUtil_SetPlaceholderPtr(0, arg1->field_C0[0]);
+    ConvertIntToDecimalStringN(data->field_C0[0], n, STR_CONV_MODE_LEFT_ALIGN, 4);
+    DynamicPlaceholderTextUtil_SetPlaceholderPtr(0, data->field_C0[0]);
 
     n = trainerCard->linkBattleLosses;
     if (n > 9999)
     {
         n = 9999;
     }
-    ConvertIntToDecimalStringN(arg1->field_C0[1], n, STR_CONV_MODE_LEFT_ALIGN, 4);
-    DynamicPlaceholderTextUtil_SetPlaceholderPtr(2, arg1->field_C0[1]);
+    ConvertIntToDecimalStringN(data->field_C0[1], n, STR_CONV_MODE_LEFT_ALIGN, 4);
+    DynamicPlaceholderTextUtil_SetPlaceholderPtr(2, data->field_C0[1]);
 
-    ConvertIntToDecimalStringN(arg1->field_C0[2], trainerCard->pokemonTrades, STR_CONV_MODE_LEFT_ALIGN, 5);
-    DynamicPlaceholderTextUtil_SetPlaceholderPtr(3, arg1->field_C0[2]);
+    ConvertIntToDecimalStringN(data->field_C0[2], trainerCard->pokemonTrades, STR_CONV_MODE_LEFT_ALIGN, 5);
+    DynamicPlaceholderTextUtil_SetPlaceholderPtr(3, data->field_C0[2]);
 
     for (i = 0; i < TRAINER_CARD_PROFILE_LENGTH; i++)
     {
-        CopyEasyChatWord(arg1->field_C0[i + 3], trainerCard->easyChatProfile[i]);
-        DynamicPlaceholderTextUtil_SetPlaceholderPtr(i + 4, arg1->field_C0[i + 3]);
+        CopyEasyChatWord(data->field_C0[i + 3], trainerCard->easyChatProfile[i]);
+        DynamicPlaceholderTextUtil_SetPlaceholderPtr(i + 4, data->field_C0[i + 3]);
     }
 
-    DynamicPlaceholderTextUtil_ExpandPlaceholders(arg1->field_1A4, sText_TrainerCardInfoPage2);
-    StringAppend(gStringVar4, arg1->field_1A4);
+    DynamicPlaceholderTextUtil_ExpandPlaceholders(data->field_1A4, sText_TrainerCardInfoPage2);
+    StringAppend(gStringVar4, data->field_1A4);
 
-    if (arg2 == TRUE)
+    if (isParent == TRUE)
     {
-        DynamicPlaceholderTextUtil_ExpandPlaceholders(arg1->field_1A4, sText_FinishedCheckingPlayersTrainerCard);
-        StringAppend(gStringVar4, arg1->field_1A4);
+        DynamicPlaceholderTextUtil_ExpandPlaceholders(data->field_1A4, sText_FinishedCheckingPlayersTrainerCard);
+        StringAppend(gStringVar4, data->field_1A4);
     }
-    else if (arg2 == FALSE)
+    else if (isParent == FALSE)
     {
-        DynamicPlaceholderTextUtil_ExpandPlaceholders(arg1->field_1A4, sGladToMeetYouTexts[trainerCard->gender]);
-        StringAppend(gStringVar4, arg1->field_1A4);
+        DynamicPlaceholderTextUtil_ExpandPlaceholders(data->field_1A4, sGladToMeetYouTexts[trainerCard->gender]);
+        StringAppend(gStringVar4, data->field_1A4);
     }
 }
 
-void sub_8018404(u8 *dest, struct UnkStruct_x20 *arg1)
+static void IntlConvPartnerUname7(u8 *dest, struct UnkStruct_x20 *arg1)
 {
-    StringCopy7(dest, arg1->unk.playerName);
-    ConvertInternationalString(dest, arg1->unk.field_0.unk_00.language);
+    StringCopy7(dest, arg1->gname_uname.playerName);
+    ConvertInternationalString(dest, arg1->gname_uname.gname.unk_00.language);
 }
diff --git a/src/union_room_battle.c b/src/union_room_battle.c
index 18dd7c3202..e73f9bd245 100644
--- a/src/union_room_battle.c
+++ b/src/union_room_battle.c
@@ -35,14 +35,14 @@ struct UnkStruct_3000DAC
     /*0x62*/ u8 filler_62[10];
 };
 
-struct UnkStruct_2022C6C
+struct UnionRoomBattleWork
 {
-    s16 a0;
+    s16 textState;
 };
 
 static struct UnkStruct_3000DAC * gUnknown_03000DAC;
 
-EWRAM_DATA struct UnkStruct_2022C6C * gUnknown_02022C6C = NULL;
+EWRAM_DATA struct UnionRoomBattleWork * sWork = NULL;
 
 void sub_801A43C(void);
 void sub_801A6C0(u8 taskId);
@@ -53,7 +53,7 @@ const u16 gWirelessInfoScreenPal[] = INCBIN_U16("graphics/interface/wireless_inf
 const u32 gWirelessInfoScreenGfx[] = INCBIN_U32("graphics/interface/wireless_info_screen.4bpp.lz");
 const u32 gWirelessInfoScreenTilemap[] = INCBIN_U32("graphics/interface/wireless_info_screen.bin.lz");
 
-const struct BgTemplate gUnknown_082F0D34[] = {
+static const struct BgTemplate sBgTemplates[] = {
     {
         .bg = 0,
         .charBaseIndex = 2,
@@ -67,7 +67,7 @@ const struct BgTemplate gUnknown_082F0D34[] = {
     }
 };
 
-const struct WindowTemplate gUnknown_082F0D3C[] = {
+const struct WindowTemplate sWindowTemplates[] = {
     {
         .bg = 0x00,
         .tilemapLeft = 0x03,
@@ -191,12 +191,12 @@ void sub_801A43C(void)
     gUnknown_03000DAC = AllocZeroed(sizeof(struct UnkStruct_3000DAC));
     SetVBlankCallback(NULL);
     ResetBgsAndClearDma3BusyFlags(0);
-    InitBgsFromTemplates(0, gUnknown_082F0D34, ARRAY_COUNT(gUnknown_082F0D34));
+    InitBgsFromTemplates(0, sBgTemplates, ARRAY_COUNT(sBgTemplates));
     SetBgTilemapBuffer(1, Alloc(0x800));
     SetBgTilemapBuffer(0, Alloc(0x800));
     DecompressAndLoadBgGfxUsingHeap(1, gWirelessInfoScreenGfx, 0, 0, 0);
     CopyToBgTilemapBuffer(1, gWirelessInfoScreenTilemap, 0, 0);
-    InitWindows(gUnknown_082F0D3C);
+    InitWindows(sWindowTemplates);
     DeactivateAllTextPrinters();
     ResetPaletteFade();
     ResetSpriteData();
@@ -205,7 +205,7 @@ void sub_801A43C(void)
     m4aSoundVSyncOn();
     SetVBlankCallback(sub_801A418);
     gUnknown_03000DAC->taskId = CreateTask(sub_801A6C0, 0);
-    gUnknown_03000DAC->unk61 = sub_8013C40();
+    gUnknown_03000DAC->unk61 = CreateTask_ListenToWireless();
     gUnknown_03000DAC->unk10[3] = 1;
     ChangeBgX(0, 0, 0);
     ChangeBgY(0, 0, 0);
@@ -369,7 +369,7 @@ static void sub_801A8B0(u8 windowId, u8 fontId, const u8 * str, u8 x, u8 y, u8 m
 u32 sub_801A960(struct UnkStruct_x20 * a0, u32 * a1)
 {
     s32 i, j, r2;
-    u32 result = a0->unk.field_0.activity;
+    u32 result = a0->gname_uname.gname.activity;
 
     for (i = 0; i < (unsigned)ARRAY_COUNT(gUnknown_082F0D70); i++)
     {
@@ -377,7 +377,7 @@ u32 sub_801A960(struct UnkStruct_x20 * a0, u32 * a1)
         {
             continue;
         }
-        if (a0->field_1A_0 != 1)
+        if (a0->groupScheduledAnim != 1)
         {
             continue;
         }
@@ -386,7 +386,7 @@ u32 sub_801A960(struct UnkStruct_x20 * a0, u32 * a1)
             r2 = 0;
             for (j = 0; j < 4; j++)
             {
-                if (a0->unk.field_0.child_sprite_gender[j] != 0)
+                if (a0->gname_uname.gname.child_sprite_gender[j] != 0)
                 {
                     r2++;
                 }
@@ -450,7 +450,7 @@ bool32 sub_801AA30(u32 * a0, u32 * a1, u32 * a2, u8 taskId)
 void sub_801AAD4(void)
 {
     s32 i;
-    sub_8014210(10);
+    StartUnionRoomBattle(10);
     for (i = 0; i < UNION_ROOM_PARTY_SIZE; i++)
     {
         gEnemyParty[i] = gPlayerParty[gSelectedOrderFromParty[i] - 1];
@@ -506,13 +506,13 @@ void sub_801AC40(void)
     TransferPlttBuffer();
 }
 
-void sub_801AC54(void)
+void CB2_UnionRoomBattle(void)
 {
     switch (gMain.state)
     {
     case 0:
         SetGpuReg(REG_OFFSET_DISPCNT, 0x0000);
-        gUnknown_02022C6C = AllocZeroed(4);
+        sWork = AllocZeroed(4);
         ResetSpriteData();
         FreeAllSpritePalettes();
         ResetTasks();
@@ -535,7 +535,7 @@ void sub_801AC54(void)
         gMain.state++;
         break;
     case 1:
-        if (sub_801ABDC(&gUnknown_02022C6C->a0, gText_CommStandbyAwaitingOtherPlayer, 0))
+        if (sub_801ABDC(&sWork->textState, gText_CommStandbyAwaitingOtherPlayer, 0))
         {
             gMain.state++;
         }
@@ -604,7 +604,7 @@ void sub_801AC54(void)
         }
         break;
     case 7:
-        if (sub_801ABDC(&gUnknown_02022C6C->a0, gText_RefusedBattle, 1))
+        if (sub_801ABDC(&sWork->textState, gText_RefusedBattle, 1))
         {
             SetMainCallback2(CB2_ReturnToField);
         }
@@ -616,7 +616,7 @@ void sub_801AC54(void)
         }
         break;
     case 9:
-        if (sub_801ABDC(&gUnknown_02022C6C->a0, gText_BattleWasRefused, 1))
+        if (sub_801ABDC(&sWork->textState, gText_BattleWasRefused, 1))
         {
             SetMainCallback2(CB2_ReturnToField);
         }
diff --git a/src/union_room_chat.c b/src/union_room_chat.c
index f212c69a74..e50d7f1009 100755
--- a/src/union_room_chat.c
+++ b/src/union_room_chat.c
@@ -588,7 +588,7 @@ const struct SpriteTemplate gUnknown_082F3244 = {
     .callback = SpriteCallbackDummy
 };
 
-void sub_801DD98(void)
+void EnterUnionRoomChat(void)
 {
     gUnknown_02022C84 = Alloc(sizeof(*gUnknown_02022C84));
     sub_801DDD0(gUnknown_02022C84);
diff --git a/src/union_room_player_avatar.c b/src/union_room_player_avatar.c
index 8a09306c0d..36f3fb6531 100644
--- a/src/union_room_player_avatar.c
+++ b/src/union_room_player_avatar.c
@@ -17,28 +17,46 @@ static u8 sub_8019DF4(void);
 static u32 sub_8019F8C(u32 playerIdx, u32 arg1);
 static void sub_801A3B0(s32 arg0, s32 arg1, u8 arg2);
 
-ALIGNED(4) const u8 gUnknown_082F072C[][10] = {
-    {0x21, 0x2c, 0x1f, 0x23, 0x25, 0x24, 0x41, 0x42},
-    {0x22, 0x28, 0x20, 0x2f, 0x2f, 0x0e, 0x14, 0x2d}
+static const u8 sUnionRoomObjGfxIds[GENDER_COUNT][10] = {
+    [MALE] = {
+        OBJ_EVENT_GFX_MAN_3, 
+        OBJ_EVENT_GFX_BLACK_BELT, 
+        OBJ_EVENT_GFX_CAMPER, 
+        OBJ_EVENT_GFX_YOUNGSTER, 
+        OBJ_EVENT_GFX_PSYCHIC_M, 
+        OBJ_EVENT_GFX_BUG_CATCHER, 
+        OBJ_EVENT_GFX_MAN_4, 
+        OBJ_EVENT_GFX_MAN_5
+    },
+    [FEMALE] = {
+        OBJ_EVENT_GFX_WOMAN_5, 
+        OBJ_EVENT_GFX_HEX_MANIAC, 
+        OBJ_EVENT_GFX_PICNICKER, 
+        OBJ_EVENT_GFX_LASS, 
+        OBJ_EVENT_GFX_LASS, 
+        OBJ_EVENT_GFX_GIRL_3, 
+        OBJ_EVENT_GFX_WOMAN_2, 
+        OBJ_EVENT_GFX_BEAUTY
+    }
 };
 
-static const s16 gUnknown_082F0740[][2] = {
-    {0x4, 0x6},
-    {0xd, 0x8},
-    {0xa, 0x6},
-    {0x1, 0x8},
-    {0xd, 0x4},
-    {0x7, 0x4},
-    {0x1, 0x4},
-    {0x7, 0x8}
+static const s16 sUnionPartnerCoords[][2] = {
+    { 4,  6},
+    {13,  8},
+    {10,  6},
+    { 1,  8},
+    {13,  4},
+    { 7,  4},
+    { 1,  4},
+    { 7,  8}
 };
 
-static const s8 gUnknown_082F0760[][2] = {
-    { 0,  0},
-    { 1,  0},
-    { 0, -1},
-    {-1,  0},
-    { 0,  1}
+static const s8 sFacingDirectionOffsets[][2] = {
+    [DIR_NONE]  = { 0,  0},
+    [DIR_SOUTH] = { 1,  0},
+    [DIR_NORTH] = { 0, -1},
+    [DIR_WEST]  = {-1,  0},
+    [DIR_EAST]  = { 0,  1}
 };
 
 static const u8 gUnknown_082F076A[] = {
@@ -79,22 +97,22 @@ static bool32 is_walking_or_running(void)
 
 static u8 sub_8019978(u32 a0, u32 a1)
 {
-    return gUnknown_082F072C[a0][a1 % 8];
+    return sUnionRoomObjGfxIds[a0][a1 % 8];
 }
 
 static void sub_8019990(u32 a0, u32 a1, s32 * a2, s32 * a3)
 {
-    *a2 = gUnknown_082F0740[a0][0] + gUnknown_082F0760[a1][0] + 7;
-    *a3 = gUnknown_082F0740[a0][1] + gUnknown_082F0760[a1][1] + 7;
+    *a2 = sUnionPartnerCoords[a0][0] + sFacingDirectionOffsets[a1][0] + 7;
+    *a3 = sUnionPartnerCoords[a0][1] + sFacingDirectionOffsets[a1][1] + 7;
 }
 
 static bool32 sub_80199E0(u32 a0, u32 a1, s32 a2, s32 a3)
 {
-    if (gUnknown_082F0740[a0][0] + gUnknown_082F0760[a1][0] + 7 != a2)
+    if (sUnionPartnerCoords[a0][0] + sFacingDirectionOffsets[a1][0] + 7 != a2)
     {
         return FALSE;
     }
-    else if (gUnknown_082F0740[a0][1] + gUnknown_082F0760[a1][1] + 7 != a3)
+    else if (sUnionPartnerCoords[a0][1] + sFacingDirectionOffsets[a1][1] + 7 != a3)
     {
         return FALSE;
     }
@@ -384,19 +402,19 @@ void sub_8019E3C(void)
     sub_8019E20();
 }
 
-void sub_8019E70(u8 * sp8, s32 r9)
+void CreateGroupMemberObjectsInvisible(u8 * sp8, s32 r9)
 {
     s32 r7;
 
     for (r7 = 0; r7 < 5; r7++)
     {
         s32 r5 = 5 * r9 + r7;
-        sp8[r5] = sprite_new(OBJ_EVENT_GFX_MAN_4, r5 - 0x38, gUnknown_082F0740[r9][0] + gUnknown_082F0760[r7][0], gUnknown_082F0740[r9][1] + gUnknown_082F0760[r7][1], 3, 1);
+        sp8[r5] = sprite_new(OBJ_EVENT_GFX_MAN_4, r5 - 0x38, sUnionPartnerCoords[r9][0] + sFacingDirectionOffsets[r7][0], sUnionPartnerCoords[r9][1] + sFacingDirectionOffsets[r7][1], 3, 1);
         sub_8097C44(r5 - 0x38, TRUE);
     }
 }
 
-void sub_8019F04(u8 * r5)
+void DestroyGroupMemberObjects(u8 * r5)
 {
     s32 i;
     for (i = 0; i < 40; i++)
@@ -526,30 +544,30 @@ static void sub_801A214(u32 r5, struct GFtgtGname * unused)
     }
 }
 
-static void sub_801A234(struct UnkStruct_URoom *r0)
+static void sub_801A234(struct WirelessLink_URoom *r0)
 {
     s32 i;
     struct UnkStruct_x20 * r4;
     gUnknown_02022C68 = 0;
     for (i = 0, r4 = r0->field_0->arr; i < 8; i++)
     {
-        if (r4[i].field_1A_0 == 1)
+        if (r4[i].groupScheduledAnim == 1)
         {
-            sub_801A16C(i, &r4[i].unk.field_0);
+            sub_801A16C(i, &r4[i].gname_uname.gname);
         }
-        else if (r4[i].field_1A_0 == 2)
+        else if (r4[i].groupScheduledAnim == 2)
         {
-            sub_801A214(i, &r4[i].unk.field_0);
+            sub_801A214(i, &r4[i].gname_uname.gname);
         }
     }
 }
 
-void sub_801A274(struct UnkStruct_URoom *unused)
+void ScheduleUnionRoomPlayerRefresh(struct WirelessLink_URoom *unused)
 {
     gUnknown_02022C68 = 300;
 }
 
-void sub_801A284(struct UnkStruct_URoom *r2)
+void HandleUnionRoomPlayerRefresh(struct WirelessLink_URoom *r2)
 {
     if (++gUnknown_02022C68 > 300)
     {
@@ -557,7 +575,7 @@ void sub_801A284(struct UnkStruct_URoom *r2)
     }
 }
 
-bool32 sub_801A2A8(struct UnkStruct_Main0 *arg0, s16 *arg1, s16 *arg2, u8 *arg3)
+bool32 RfuUnionTool_GetGroupAndMemberInFrontOfPlayer(struct UnkStruct_Main0 *arg0, s16 *arg1, s16 *arg2, u8 *arg3)
 {
     s16 x, y;
     s32 i, j;
@@ -572,11 +590,11 @@ bool32 sub_801A2A8(struct UnkStruct_Main0 *arg0, s16 *arg1, s16 *arg2, u8 *arg3)
         for (j = 0; j < 5; j++)
         {
             s32 r3 = 5 * i + j;
-            if (x != gUnknown_082F0740[i][0] + gUnknown_082F0760[j][0] + 7)
+            if (x != sUnionPartnerCoords[i][0] + sFacingDirectionOffsets[j][0] + 7)
             {
                 continue;
             }
-            if (y != gUnknown_082F0740[i][1] + gUnknown_082F0760[j][1] + 7)
+            if (y != sUnionPartnerCoords[i][1] + sFacingDirectionOffsets[j][1] + 7)
             {
                 continue;
             }
@@ -588,7 +606,7 @@ bool32 sub_801A2A8(struct UnkStruct_Main0 *arg0, s16 *arg1, s16 *arg2, u8 *arg3)
             {
                 continue;
             }
-            if (r4[i].field_1A_0 != 1)
+            if (r4[i].groupScheduledAnim != 1)
             {
                 continue;
             }
@@ -606,7 +624,7 @@ static void sub_801A3B0(s32 arg0, s32 arg1, u8 arg2)
     sub_8097B78(5 * arg1 - 0x38 + arg0, arg2);
 }
 
-void sub_801A3D0(u32 arg0, u32 arg1, struct UnkStruct_Main0 *arg2)
+void UpdateUnionGroupMemberFacing(u32 arg0, u32 arg1, struct UnkStruct_Main0 *arg2)
 {
-    return sub_801A3B0(arg0, arg1, sub_8019F64(arg0, arg1, &arg2->arr[arg1].unk.field_0));
+    return sub_801A3B0(arg0, arg1, sub_8019F64(arg0, arg1, &arg2->arr[arg1].gname_uname.gname));
 }