Merge pull request #1506 from GriffinRichards/single-doc

Document some single-remaining symbols

src/item_menu_icons.c

@@ -562,23 +562,31 @@ void UpdateItemMenuSwapLinePos(u8 y)
     UpdateSwapLineSpritesPos(&gBagMenu->spriteIds[ITEMMENUSPRITE_SWAP_LINE], ITEMMENU_SWAP_LINE_LENGTH | SWAP_LINE_HAS_MARGIN, 120, (y + 1) * 16);
 }
 
-static void sub_80D5018(void *mem0, void *mem1)
+static void ArrangeBerryGfx(void *src, void *dest)
 {
     u8 i, j;
 
-    memset(mem1, 0, 0x800);
-    mem1 += 0x100;
+    memset(dest, 0, 0x800);
+
+    // Create top margin
+    dest += 0x100;
+
     for (i = 0; i < 6; i++)
     {
-        mem1 += 0x20;
+        // Create left margin
+        dest += 0x20;
+
+        // Copy one row of berry's icon
         for (j = 0; j < 6; j++)
         {
-            memcpy(mem1, mem0, 0x20);
-            mem1 += 0x20;
-            mem0 += 0x20;
+            memcpy(dest, src, 0x20);
+            dest += 0x20;
+            src += 0x20;
         }
+
+        // Create right margin
         if (i != 5)
-            mem1 += 0x20;
+            dest += 0x20;
     }
 }
 
@@ -595,7 +603,7 @@ static void LoadBerryGfx(u8 berryId)
     pal.tag = TAG_BERRY_PIC_PAL;
     LoadCompressedSpritePalette(&pal);
     LZDecompressWram(sBerryPicTable[berryId].tiles, &gDecompressionBuffer[0x1000]);
-    sub_80D5018(&gDecompressionBuffer[0x1000], &gDecompressionBuffer[0]);
+    ArrangeBerryGfx(&gDecompressionBuffer[0x1000], &gDecompressionBuffer[0]);
 }
 
 u8 CreateBerryTagSprite(u8 id, s16 x, s16 y)