Miscellaneous fixes:

- `hSecondsBackup` -> `hUnusedBackup`
- `ld bc, hBGMapAddress + 1` -> `bccoord -1, -2, 0`
- Identify some `.asm_XXX` labels

engine/menus/intro_menu.asm

@@ -110,13 +110,13 @@ _ResetWRAM:
 	call ByteFill
 
 	ldh a, [rLY]
-	ldh [hSecondsBackup], a
+	ldh [hUnusedBackup], a
 	call DelayFrame
 	ldh a, [hRandomSub]
 	ld [wPlayerID], a
 
 	ldh a, [rLY]
-	ldh [hSecondsBackup], a
+	ldh [hUnusedBackup], a
 	call DelayFrame
 	ldh a, [hRandomAdd]
 	ld [wPlayerID + 1], a

engine/menus/scrolling_menu.asm

@@ -244,16 +244,16 @@ InitScrollingMenuCursor:
 	ld a, [wScrollingMenuListSize]
 	inc a
 	cp b
-	jr c, .asm_2475a
-	jr nc, .asm_24763
+	jr c, .wrap
+	jr nc, .done
 
-.asm_2475a
+.wrap
 	xor a
 	ld [wMenuScrollPosition], a
 	ld a, $1
 	ld [wMenuCursorBuffer], a
 
-.asm_24763
+.done
 	ret
 
 ScrollingMenu_InitFlags: