diff --git a/common_syms/overworld.txt b/common_syms/overworld.txt
index 1ba43d7cf..e136f5444 100644
--- a/common_syms/overworld.txt
+++ b/common_syms/overworld.txt
@@ -4,5 +4,5 @@ gBGTilemapBuffers3
 gHeldKeyCodeToSend
 gFieldCallback
 gFieldCallback2
-LocalLinkPlayerId
+gLocalLinkPlayerId
 gFieldLinkPlayerCount
diff --git a/data/maps/TradeCenter/map.json b/data/maps/TradeCenter/map.json
index 9d196c762..3e47ca41b 100644
--- a/data/maps/TradeCenter/map.json
+++ b/data/maps/TradeCenter/map.json
@@ -46,7 +46,6 @@
   ],
   "coord_events": [
     {
-      "comment": "This is trade seat #1.",
       "type": "trigger",
       "x": 4,
       "y": 5,
diff --git a/include/link.h b/include/link.h
index 83deab88f..182ee68f4 100644
--- a/include/link.h
+++ b/include/link.h
@@ -299,7 +299,7 @@ extern struct LinkPlayer gLocalLinkPlayer;
 
 bool32 Link_AnyPartnersPlayingRubyOrSapphire(void);
 bool32 sub_800A03C(void);
-void SetLocalLinkPlayerId(u8);
+void SetgLocalLinkPlayerId(u8);
 u8 GetSavedPlayerCount(void);
 void sub_8009FAC(void);
 bool8 sub_800A4D8(u8 a0);
diff --git a/include/overworld.h b/include/overworld.h
index ea361e25b..bf1d93901 100644
--- a/include/overworld.h
+++ b/include/overworld.h
@@ -48,7 +48,7 @@ extern u16 *gBGTilemapBuffers3;
 extern u16 gHeldKeyCodeToSend;
 extern void (*gFieldCallback)(void);
 extern bool8 (*gFieldCallback2)(void);
-extern u8 LocalLinkPlayerId;
+extern u8 gLocalLinkPlayerId;
 extern u8 gFieldLinkPlayerCount;
 
 // Exported ROM declarations
diff --git a/include/save.h b/include/save.h
index de2dd5129..7ce86de70 100644
--- a/include/save.h
+++ b/include/save.h
@@ -83,8 +83,8 @@ bool8 sub_8153380(void);
 bool8 sub_81533AC(void);
 u8 sub_81533E0(void);
 u8 sub_8153408(void);
-u8 FullSaveGame(void); //FullSaveGame
-bool8 CheckSaveFile(void); //CheckSaveFile
+u8 FullSaveGame(void);
+bool8 CheckSaveFile(void);
 u8 Save_LoadGameData(u8 a1);
 u16 sub_815355C(void);
 u8 sub_81534D0(u8);
diff --git a/src/berry_blender.c b/src/berry_blender.c
index dd8117f08..87d24e717 100644
--- a/src/berry_blender.c
+++ b/src/berry_blender.c
@@ -34,6 +34,8 @@
 #include "battle_records.h"
 #include "graphics.h"
 #include "new_game.h"
+#include "save.h"
+#include "link.h"
 
 #define BLENDER_SCORE_BEST      0
 #define BLENDER_SCORE_GOOD      1
@@ -140,15 +142,8 @@ extern const u8 gText_Space[];
 extern const u8 gText_BlenderMaxSpeedRecord[];
 extern const u8 gText_234Players[];
 
-extern void sub_800A418(void);
-extern u8 sub_800A9D8(void);
 extern void sub_81AABF0(void (*callback)(void));
 extern void sub_800B4C0(void);
-extern void ClearLinkCallback(void);
-extern void sub_8009F8C(void);
-extern void FullSaveGame(void);
-extern bool8 CheckSaveFile(void);
-extern void sub_80EECEC(void);
 
 // this file's functions
 static void BerryBlender_SetBackgroundsPos(void);
diff --git a/src/cable_club.c b/src/cable_club.c
index 83e1e55dd..f504ad8a8 100644
--- a/src/cable_club.c
+++ b/src/cable_club.c
@@ -352,7 +352,7 @@ static void sub_80B2918(u8 taskId)
     else
     {
         gFieldLinkPlayerCount = GetLinkPlayerCount_2();
-        LocalLinkPlayerId = GetMultiplayerId();
+        gLocalLinkPlayerId = GetMultiplayerId();
         sub_800AA04(gFieldLinkPlayerCount);
         card = (struct TrainerCard *)gBlockSendBuffer;
         TrainerCard_GenerateCardForPlayer(card);
@@ -399,7 +399,7 @@ static void sub_80B2A08(u8 taskId)
     else
     {
         gFieldLinkPlayerCount = GetLinkPlayerCount_2();
-        LocalLinkPlayerId = GetMultiplayerId();
+        gLocalLinkPlayerId = GetMultiplayerId();
         sub_800AA04(gFieldLinkPlayerCount);
         card = (struct TrainerCard *)gBlockSendBuffer;
         TrainerCard_GenerateCardForPlayer(card);
@@ -972,7 +972,7 @@ void sub_80B360C(void)
 
     if (gSpecialVar_0x8004 == 1 || gSpecialVar_0x8004 == 2)
     {
-        UpdatePlayerLinkBattleRecords(LocalLinkPlayerId ^ 1);
+        UpdatePlayerLinkBattleRecords(gLocalLinkPlayerId ^ 1);
         if (gWirelessCommType)
         {
             switch (gBattleOutcome)
@@ -1028,7 +1028,7 @@ static void sub_80B3728(u8 taskId)
         if (IsFieldMessageBoxHidden())
         {
             sub_8087288();
-            SetLocalLinkPlayerId(gSpecialVar_0x8005);
+            SetgLocalLinkPlayerId(gSpecialVar_0x8005);
             task->data[0] = 2;
         }
         break;
diff --git a/src/link.c b/src/link.c
index 72ac3e878..cf06e4958 100644
--- a/src/link.c
+++ b/src/link.c
@@ -302,7 +302,7 @@ void LinkTestScreen(void)
     SetMainCallback2(CB2_LinkTest);
 }
 
-void SetLocalLinkPlayerId(u8 playerId)
+void SetgLocalLinkPlayerId(u8 playerId)
 {
     gLocalLinkPlayer.id = playerId;
 }
diff --git a/src/overworld.c b/src/overworld.c
index 95766805c..63143b7b4 100644
--- a/src/overworld.c
+++ b/src/overworld.c
@@ -203,7 +203,7 @@ u16 *gBGTilemapBuffers3;
 u16 gHeldKeyCodeToSend;
 void (*gFieldCallback)(void);
 bool8 (*gFieldCallback2)(void);
-u8 LocalLinkPlayerId; // This is our player id in a multiplayer mode.
+u8 gLocalLinkPlayerId; // This is our player id in a multiplayer mode.
 u8 gFieldLinkPlayerCount;
 
 // EWRAM vars
@@ -2194,13 +2194,13 @@ static void sub_8086A80(void)
 
 static void SetCameraToTrackGuestPlayer(void)
 {
-    InitCameraUpdateCallback(GetSpriteForLinkedPlayer(LocalLinkPlayerId));
+    InitCameraUpdateCallback(GetSpriteForLinkedPlayer(gLocalLinkPlayerId));
 }
 
 // Duplicate function.
 static void SetCameraToTrackGuestPlayer_2(void)
 {
-    InitCameraUpdateCallback(GetSpriteForLinkedPlayer(LocalLinkPlayerId));
+    InitCameraUpdateCallback(GetSpriteForLinkedPlayer(gLocalLinkPlayerId));
 }
 
 static void sub_8086AE4(void)
@@ -2210,7 +2210,7 @@ static void sub_8086AE4(void)
 
     // This is a hack of some kind; it's undone in sub_8086B14, which is called
     // soon after this function.
-    sub_8088B3C(x + LocalLinkPlayerId, y);
+    sub_8088B3C(x + gLocalLinkPlayerId, y);
 }
 
 static void sub_8086B14(void)
@@ -2219,7 +2219,7 @@ static void sub_8086B14(void)
     u16 x, y;
 
     GetCameraFocusCoords(&x, &y);
-    x -= LocalLinkPlayerId;
+    x -= gLocalLinkPlayerId;
 
     for (i = 0; i < gFieldLinkPlayerCount; i++)
     {
@@ -2242,7 +2242,7 @@ static void CB1_UpdateLinkState(void)
 {
     if (gWirelessCommType == 0 || !IsRfuRecvQueueEmpty() || !IsSendingKeysToLink())
     {
-        u8 selfId = LocalLinkPlayerId;
+        u8 selfId = gLocalLinkPlayerId;
         UpdateAllLinkPlayers(gLinkPartnersHeldKeys, selfId);
 
         // Note: Because guestId is between 0 and 4, while the smallest key code is
@@ -2296,7 +2296,7 @@ static void ResetAllTradingStates(void)
 }
 
 // Returns true if all connected players are in tradingState.
-static bool32 AreAllPlayersInState(u16 tradingState)
+static bool32 AreAllPlayersInTradingState(u16 tradingState)
 {
     s32 i;
     s32 count = gFieldLinkPlayerCount;
@@ -2307,7 +2307,7 @@ static bool32 AreAllPlayersInState(u16 tradingState)
     return TRUE;
 }
 
-static bool32 AreAnyPlayersInTradingState(u16 tradingState)
+static bool32 IsAnyPlayerInTradingState(u16 tradingState)
 {
     s32 i;
     s32 count = gFieldLinkPlayerCount;
@@ -2336,7 +2336,7 @@ static void HandleLinkPlayerKeyInput(u32 playerId, u16 key, struct TradeRoomPlay
             }
             return;
         }
-        if (AreAnyPlayersInTradingState(PLAYER_TRADING_STATE_EXITING_ROOM) == TRUE)
+        if (IsAnyPlayerInTradingState(PLAYER_TRADING_STATE_EXITING_ROOM) == TRUE)
         {
             sPlayerTradingStates[playerId] = PLAYER_TRADING_STATE_BUSY;
             if (trainer->isLocalPlayer)
@@ -2629,7 +2629,7 @@ static u16 KeyInterCB_WaitForPlayersToExit(u32 keyOrPlayerId)
     // CB1_UpdateLinkState.
     if (sPlayerTradingStates[keyOrPlayerId] != PLAYER_TRADING_STATE_EXITING_ROOM)
         CheckRfuKeepAliveTimer();
-    if (AreAllPlayersInState(PLAYER_TRADING_STATE_EXITING_ROOM) == TRUE)
+    if (AreAllPlayersInTradingState(PLAYER_TRADING_STATE_EXITING_ROOM) == TRUE)
     {
         ScriptContext1_SetupScript(EventScript_DoLinkRoomExit);
         SetKeyInterceptCallback(KeyInterCB_SendNothing);
@@ -2651,20 +2651,20 @@ static u16 KeyInterCB_SendNothing_2(u32 key)
 
 u32 sub_8087214(void)
 {
-    if (AreAnyPlayersInTradingState(PLAYER_TRADING_STATE_EXITING_ROOM) == TRUE)
+    if (IsAnyPlayerInTradingState(PLAYER_TRADING_STATE_EXITING_ROOM) == TRUE)
         return 2;
-    if (sPlayerKeyInterceptCallback == sub_8087170 && sPlayerTradingStates[LocalLinkPlayerId] != PLAYER_TRADING_STATE_UNK_2)
+    if (sPlayerKeyInterceptCallback == sub_8087170 && sPlayerTradingStates[gLocalLinkPlayerId] != PLAYER_TRADING_STATE_UNK_2)
         return 0;
-    if (sPlayerKeyInterceptCallback == KeyInterCB_DoNothingAndKeepAlive && sPlayerTradingStates[LocalLinkPlayerId] == PLAYER_TRADING_STATE_BUSY)
+    if (sPlayerKeyInterceptCallback == KeyInterCB_DoNothingAndKeepAlive && sPlayerTradingStates[gLocalLinkPlayerId] == PLAYER_TRADING_STATE_BUSY)
         return 2;
-    if (AreAllPlayersInState(PLAYER_TRADING_STATE_UNK_2) != FALSE)
+    if (AreAllPlayersInTradingState(PLAYER_TRADING_STATE_UNK_2) != FALSE)
         return 1;
     return 0;
 }
 
 bool32 sub_808727C(void)
 {
-    return AreAnyPlayersInTradingState(PLAYER_TRADING_STATE_EXITING_ROOM);
+    return IsAnyPlayerInTradingState(PLAYER_TRADING_STATE_EXITING_ROOM);
 }
 
 u16 sub_8087288(void)
diff --git a/src/record_mixing.c b/src/record_mixing.c
index aafd7284b..e58fdcc4e 100644
--- a/src/record_mixing.c
+++ b/src/record_mixing.c
@@ -324,7 +324,7 @@ static void Task_RecordMixing_Main(u8 taskId)
     case 0: // init
         sSentRecord = malloc(sizeof(union PlayerRecords));
         sReceivedRecords = malloc(sizeof(union PlayerRecords) * 4);
-        SetLocalLinkPlayerId(gSpecialVar_0x8005);
+        SetgLocalLinkPlayerId(gSpecialVar_0x8005);
         VarSet(VAR_TEMP_0, 1);
         gUnknown_03001130 = FALSE;
         PrepareExchangePacket();
diff --git a/src/rom_8011DC0.c b/src/rom_8011DC0.c
index 0f3ebe633..3d85a9d1d 100644
--- a/src/rom_8011DC0.c
+++ b/src/rom_8011DC0.c
@@ -188,7 +188,7 @@ extern u8 gUnknown_02022C3E;
 extern u16 gUnknown_02022C3C;
 extern u8 gUnknown_02022C20[];
 extern u8 gFieldLinkPlayerCount;
-extern u8 LocalLinkPlayerId;
+extern u8 gLocalLinkPlayerId;
 
 // IWRAM vars
 IWRAM_DATA struct UnkStruct_Leader *gUnknown_03000DA0;
@@ -1641,7 +1641,7 @@ void sub_8014304(s8 mapGroup, s8 mapNum, s32 x, s32 y, u16 arg4)
     gSpecialVar_0x8004 = arg4;
     VarSet(VAR_0x4087, arg4);
     gFieldLinkPlayerCount = GetLinkPlayerCount();
-    LocalLinkPlayerId = GetMultiplayerId();
+    gLocalLinkPlayerId = GetMultiplayerId();
     SetCableClubWarp();
     SetWarpDestination(mapGroup, mapNum, -1, x, y);
     WarpIntoMap();
diff --git a/src/start_menu.c b/src/start_menu.c
index 352f94bff..fb94fb3f7 100644
--- a/src/start_menu.c
+++ b/src/start_menu.c
@@ -84,7 +84,7 @@ EWRAM_DATA static bool8 sSavingComplete = FALSE;
 EWRAM_DATA static u8 sSaveInfoWindowId = 0;
 
 // Extern variables.
-extern u8 LocalLinkPlayerId;
+extern u8 gLocalLinkPlayerId;
 
 // Extern functions in not decompiled files.
 extern void sub_80AF688(void);
@@ -734,7 +734,7 @@ static bool8 StartMenuLinkModePlayerNameCallback(void)
     {
         PlayRainSoundEffect();
         CleanupOverworldWindowsAndTilemaps();
-        ShowTrainerCardInLink(LocalLinkPlayerId, CB2_ReturnToFieldWithOpenMenu);
+        ShowTrainerCardInLink(gLocalLinkPlayerId, CB2_ReturnToFieldWithOpenMenu);
 
         return TRUE;
     }