diff --git a/.gitignore b/.gitignore
index faa96ee16..e92f33000 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,7 +13,7 @@
 *.gbc
 *.gb
 
-# for any of the poor souls with save game files in their working directory
+# save game files
 *.sgm
 *.sav
 *.rtc
@@ -32,14 +32,15 @@ pokecrystal.txt
 # used_space.py
 used_space.png
 
-# for vim configuration
-# url: http://www.vim.org/scripts/script.php?script_id=441
+# vim configuration
+# http://www.vim.org/scripts/script.php?script_id=441
 .lvimrc
-# swap files for vim
+
+# swap files for vim and gedit
 .*.swp
-# swap files for gedit
 *~
-# osx files
+
+# macos files
 .DS_STORE
 
 # compiled graphics
diff --git a/constants/battle_constants.asm b/constants/battle_constants.asm
index 7e444059d..244d52a3e 100644
--- a/constants/battle_constants.asm
+++ b/constants/battle_constants.asm
@@ -10,8 +10,9 @@ NUM_MOVES EQU 4
 BASE_STAT_LEVEL EQU 7
 MAX_STAT_LEVEL EQU 13
 
-; minimum damage before type effectiveness
+; damage limits before type effectiveness
 MIN_NEUTRAL_DAMAGE EQU 2
+MAX_NEUTRAL_DAMAGE EQU 999
 
 ; turns that sleep lasts
 REST_SLEEP_TURNS EQU 2
diff --git a/engine/battle/effect_commands.asm b/engine/battle/effect_commands.asm
index d936e9f7e..d6f90d587 100644
--- a/engine/battle/effect_commands.asm
+++ b/engine/battle/effect_commands.asm
@@ -3066,72 +3066,73 @@ BattleCommand_DamageCalc:
 ; Critical hits
 	call .CriticalMultiplier
 
-; Update wCurDamage (capped at 997).
+; Update wCurDamage. 
+; Capped at MAX_NEUTRAL_DAMAGE - MIN_NEUTRAL_DAMAGE: 999 - 2 = 997.
 	ld hl, wCurDamage
 	ld b, [hl]
-	ldh a, [hProduct + 3]
+	ldh a, [hQuotient + 3]
 	add b
-	ldh [hProduct + 3], a
+	ldh [hQuotient + 3], a
 	jr nc, .dont_cap_1
 
-	ldh a, [hProduct + 2]
+	ldh a, [hQuotient + 2]
 	inc a
-	ldh [hProduct + 2], a
+	ldh [hQuotient + 2], a
 	and a
 	jr z, .Cap
 
 .dont_cap_1
-	ldh a, [hProduct]
+	ldh a, [hQuotient]
 	ld b, a
-	ldh a, [hProduct + 1]
+	ldh a, [hQuotient + 1]
 	or a
 	jr nz, .Cap
 
-	ldh a, [hProduct + 2]
-	cp HIGH(MAX_STAT_VALUE - MIN_NEUTRAL_DAMAGE + 1)
+	ldh a, [hQuotient + 2]
+	cp HIGH(MAX_NEUTRAL_DAMAGE - MIN_NEUTRAL_DAMAGE + 1)
 	jr c, .dont_cap_2
 
-	cp HIGH(MAX_STAT_VALUE - MIN_NEUTRAL_DAMAGE + 1) + 1
+	cp HIGH(MAX_NEUTRAL_DAMAGE - MIN_NEUTRAL_DAMAGE + 1) + 1
 	jr nc, .Cap
 
-	ldh a, [hProduct + 3]
-	cp LOW(MAX_STAT_VALUE - MIN_NEUTRAL_DAMAGE + 1)
+	ldh a, [hQuotient + 3]
+	cp LOW(MAX_NEUTRAL_DAMAGE - MIN_NEUTRAL_DAMAGE + 1)
 	jr nc, .Cap
 
 .dont_cap_2
 	inc hl
 
-	ldh a, [hProduct + 3]
+	ldh a, [hQuotient + 3]
 	ld b, [hl]
 	add b
 	ld [hld], a
 
-	ldh a, [hProduct + 2]
+	ldh a, [hQuotient + 2]
 	ld b, [hl]
 	adc b
 	ld [hl], a
 	jr c, .Cap
 
 	ld a, [hl]
-	cp HIGH(MAX_STAT_VALUE - MIN_NEUTRAL_DAMAGE + 1)
+	cp HIGH(MAX_NEUTRAL_DAMAGE - MIN_NEUTRAL_DAMAGE + 1)
 	jr c, .dont_cap_3
 
-	cp HIGH(MAX_STAT_VALUE - MIN_NEUTRAL_DAMAGE + 1) + 1
+	cp HIGH(MAX_NEUTRAL_DAMAGE - MIN_NEUTRAL_DAMAGE + 1) + 1
 	jr nc, .Cap
 
 	inc hl
 	ld a, [hld]
-	cp LOW(MAX_STAT_VALUE - MIN_NEUTRAL_DAMAGE + 1)
+	cp LOW(MAX_NEUTRAL_DAMAGE - MIN_NEUTRAL_DAMAGE + 1)
 	jr c, .dont_cap_3
 
 .Cap:
-	ld a, HIGH(MAX_STAT_VALUE - MIN_NEUTRAL_DAMAGE)
+	ld a, HIGH(MAX_NEUTRAL_DAMAGE - MIN_NEUTRAL_DAMAGE)
 	ld [hli], a
-	ld a, LOW(MAX_STAT_VALUE - MIN_NEUTRAL_DAMAGE)
+	ld a, LOW(MAX_NEUTRAL_DAMAGE - MIN_NEUTRAL_DAMAGE)
 	ld [hld], a
 
 .dont_cap_3
-; Minimum neutral damage is 2 (bringing the cap to 999).
+; Add back MIN_NEUTRAL_DAMAGE (capping at 999).
 	inc hl
 	ld a, [hl]
 	add MIN_NEUTRAL_DAMAGE
@@ -3140,6 +3141,7 @@ BattleCommand_DamageCalc:
 	inc [hl]
 .dont_floor
 
+; Returns nz and nc.
 	ld a, 1
 	and a
 	ret
@@ -3152,18 +3154,18 @@ BattleCommand_DamageCalc:
 ; x2
 	ldh a, [hQuotient + 3]
 	add a
-	ldh [hProduct + 3], a
+	ldh [hQuotient + 3], a
 
 	ldh a, [hQuotient + 2]
 	rl a
-	ldh [hProduct + 2], a
+	ldh [hQuotient + 2], a
 
 ; Cap at $ffff.
 	ret nc
 
 	ld a, $ff
-	ldh [hProduct + 2], a
-	ldh [hProduct + 3], a
+	ldh [hQuotient + 2], a
+	ldh [hQuotient + 3], a
 
 	ret