diff --git a/code/__defines/ZAS.dm b/code/__defines/ZAS.dm
index 1760505f3a0..ba2b4b73e76 100644
--- a/code/__defines/ZAS.dm
+++ b/code/__defines/ZAS.dm
@@ -9,5 +9,5 @@
 // More complicated, conditional airflow should override CanZASPass().
 #define ATMOS_PASS_YES			1	// Always blocks air and zones.
 #define ATMOS_PASS_NO			2	// Never blocks air or zones.
-#define ATMOS_PASS_DENSITY		3	// Blocks air and zones if density = 1, allows both if density = 0
+#define ATMOS_PASS_DENSITY		3	// Blocks air and zones if density = TRUE, allows both if density = FALSE
 #define ATMOS_PASS_PROC			4	// Call CanZASPass() using c_airblock
diff --git a/code/_helpers/unsorted.dm b/code/_helpers/unsorted.dm
index 1a2321f7de4..62100370e19 100644
--- a/code/_helpers/unsorted.dm
+++ b/code/_helpers/unsorted.dm
@@ -65,7 +65,7 @@
 		.+=360
 
 //Returns location. Returns null if no location was found.
-/proc/get_teleport_loc(turf/location,mob/target,distance = 1, density = 0, errorx = 0, errory = 0, eoffsetx = 0, eoffsety = 0)
+/proc/get_teleport_loc(turf/location,mob/target,distance = 1, density = FALSE, errorx = 0, errory = 0, eoffsetx = 0, eoffsety = 0)
 /*
 Location where the teleport begins, target that will teleport, distance to go, density checking 0/1(yes/no).
 Random error in tile placement x, error in tile placement y, and block offset.
diff --git a/code/datums/supplypacks/hydroponics.dm b/code/datums/supplypacks/hydroponics.dm
index 069911606e5..4b47a77140f 100644
--- a/code/datums/supplypacks/hydroponics.dm
+++ b/code/datums/supplypacks/hydroponics.dm
@@ -153,6 +153,6 @@
 	cost = 50
 	containertype = /obj/structure/closet/crate/aether
 	containername = "Hydroponics tray crate"
-	contains = list(/obj/machinery/portable_atmospherics/hydroponics{anchored = 0} = 3)
+	contains = list(/obj/machinery/portable_atmospherics/hydroponics{anchored = FALSE} = 3)
 	access = access_hydroponics
 
diff --git a/code/datums/supplypacks/supply.dm b/code/datums/supplypacks/supply.dm
index 28663e11fc7..eff6fb84fd0 100644
--- a/code/datums/supplypacks/supply.dm
+++ b/code/datums/supplypacks/supply.dm
@@ -77,7 +77,7 @@
 			/obj/item/weapon/folder/yellow,
 			/obj/item/weapon/hand_labeler,
 			/obj/item/weapon/tape_roll,
-			/obj/structure/filingcabinet/chestdrawer{anchored = 0},
+			/obj/structure/filingcabinet/chestdrawer{anchored = FALSE},
 			/obj/item/weapon/paper_bin
 			)
 	name = "Office supplies"
diff --git a/code/game/gamemodes/cult/cult_items.dm b/code/game/gamemodes/cult/cult_items.dm
index 881dde134d2..3622998eef6 100644
--- a/code/game/gamemodes/cult/cult_items.dm
+++ b/code/game/gamemodes/cult/cult_items.dm
@@ -26,7 +26,7 @@
 		var/obj/item/organ/external/affecting = H.get_organ(zone)
 		to_chat(user, "<span class='danger'>An inexplicable force rips through your [affecting.name], tearing the sword from your grasp!</span>")
 		//random amount of damage between half of the blade's force and the full force of the blade.
-		user.apply_damage(rand(force/2, force), BRUTE, zone, 0, sharp=1, edge=1)
+		user.apply_damage(rand(force/2, force), BRUTE, zone, 0, sharp = TRUE, edge = TRUE)
 		user.Weaken(5)
 	else if(!istype(user, /mob/living/simple_mob/construct))
 		to_chat(user, "<span class='danger'>An inexplicable force rips through you, tearing the sword from your grasp!</span>")
diff --git a/code/game/machinery/doors/door.dm b/code/game/machinery/doors/door.dm
index 2df0fac4ea1..d253a4dd689 100644
--- a/code/game/machinery/doors/door.dm
+++ b/code/game/machinery/doors/door.dm
@@ -157,7 +157,7 @@
 /obj/machinery/door/CanZASPass(turf/T, is_zone)
 	if(is_zone)
 		return !block_air_zones // Block merging unless block_air_zones = 0
-	return !density // Block airflow unless density = 0
+	return !density // Block airflow unless density = FALSE
 
 /obj/machinery/door/proc/bumpopen(mob/user as mob)
 	if(operating)	return
diff --git a/code/game/machinery/telecomms/presets.dm b/code/game/machinery/telecomms/presets.dm
index 8d11f99619e..8c8b2fc6f7d 100644
--- a/code/game/machinery/telecomms/presets.dm
+++ b/code/game/machinery/telecomms/presets.dm
@@ -28,7 +28,7 @@
 	id = "CentCom Relay"
 	hide = 1
 	toggled = 1
-	//anchored = 1
+	//anchored = TRUE
 	//use_power = 0
 	//idle_power_usage = 0
 	produces_heat = 0
diff --git a/code/game/objects/stumble_into_vr.dm b/code/game/objects/stumble_into_vr.dm
index d2826483032..610afea5501 100644
--- a/code/game/objects/stumble_into_vr.dm
+++ b/code/game/objects/stumble_into_vr.dm
@@ -41,7 +41,7 @@
 /obj/structure/kitchenspike/stumble_into(mob/living/M)
 	playsound(src, "sound/weapons/pierce.ogg", 25, 1, -1)
 	visible_message("<span class='warning'>[M] [pick("ran", "slammed")] into the spikes on \the [src]!</span>")
-	M.apply_damage(15, BRUTE, sharp=1)
+	M.apply_damage(15, BRUTE, sharp = TRUE)
 	M.Weaken(5)
 	M.stop_flying()
 
diff --git a/code/modules/hydroponics/seed.dm b/code/modules/hydroponics/seed.dm
index dfa95aed2d7..0446895fc4a 100644
--- a/code/modules/hydroponics/seed.dm
+++ b/code/modules/hydroponics/seed.dm
@@ -140,7 +140,7 @@
 
 		if(affecting)
 			to_chat(target, "<span class='danger'>\The [fruit]'s thorns pierce your [affecting.name] greedily!</span>")
-			target.apply_damage(damage, BRUTE, target_limb, blocked, soaked, "Thorns", sharp=1, edge=has_edge)
+			target.apply_damage(damage, BRUTE, target_limb, blocked, soaked, "Thorns", sharp = TRUE, edge=has_edge)
 		else
 			to_chat(target, "<span class='danger'>\The [fruit]'s thorns pierce your flesh greedily!</span>")
 			target.adjustBruteLoss(damage)
@@ -149,7 +149,7 @@
 		has_edge = prob(get_trait(TRAIT_POTENCY)/5)
 		if(affecting)
 			to_chat(target, "<span class='danger'>\The [fruit]'s thorns dig deeply into your [affecting.name]!</span>")
-			target.apply_damage(damage, BRUTE, target_limb, blocked, "Thorns", sharp=1, edge=has_edge)
+			target.apply_damage(damage, BRUTE, target_limb, blocked, "Thorns", sharp = TRUE, edge=has_edge)
 		else
 			to_chat(target, "<span class='danger'>\The [fruit]'s thorns dig deeply into your flesh!</span>")
 			target.adjustBruteLoss(damage)
diff --git a/code/modules/mob/living/carbon/human/human_damage.dm b/code/modules/mob/living/carbon/human/human_damage.dm
index e024b5bd7ee..a3554a262f7 100644
--- a/code/modules/mob/living/carbon/human/human_damage.dm
+++ b/code/modules/mob/living/carbon/human/human_damage.dm
@@ -358,7 +358,7 @@ In most cases it makes more sense to use apply_damage() instead! And make sure t
 //Damages ONE external organ, organ gets randomly selected from damagable ones.
 //It automatically updates damage overlays if necesary
 //It automatically updates health status
-/mob/living/carbon/human/take_organ_damage(var/brute, var/burn, var/sharp = 0, var/edge = 0)
+/mob/living/carbon/human/take_organ_damage(var/brute, var/burn, var/sharp = FALSE, var/edge = FALSE)
 	var/list/obj/item/organ/external/parts = get_damageable_organs()
 	if(!parts.len)	return
 	var/obj/item/organ/external/picked = pick(parts)
@@ -391,7 +391,7 @@ In most cases it makes more sense to use apply_damage() instead! And make sure t
 	if(update)	UpdateDamageIcon()
 
 // damage MANY external organs, in random order
-/mob/living/carbon/human/take_overall_damage(var/brute, var/burn, var/sharp = 0, var/edge = 0, var/used_weapon = null)
+/mob/living/carbon/human/take_overall_damage(var/brute, var/burn, var/sharp = FALSE, var/edge = FALSE, var/used_weapon = null)
 	if(status_flags & GODMODE)	return	//godmode
 	var/list/obj/item/organ/external/parts = get_damageable_organs()
 	var/update = 0
@@ -448,7 +448,7 @@ This function restores all organs.
 	return organs_by_name[zone]
 */
 
-/mob/living/carbon/human/apply_damage(var/damage = 0, var/damagetype = BRUTE, var/def_zone = null, var/blocked = 0, var/soaked = 0, var/sharp = 0, var/edge = 0, var/obj/used_weapon = null)
+/mob/living/carbon/human/apply_damage(var/damage = 0, var/damagetype = BRUTE, var/def_zone = null, var/blocked = 0, var/soaked = 0, var/sharp = FALSE, var/edge = FALSE, var/obj/used_weapon = null)
 	if(Debug2)
 		to_world_log("## DEBUG: human/apply_damage() was called on [src], with [damage] damage, an armor value of [blocked], and a soak value of [soaked].")
 
diff --git a/code/modules/mob/living/damage_procs.dm b/code/modules/mob/living/damage_procs.dm
index 03fd22609bb..4eaab779266 100644
--- a/code/modules/mob/living/damage_procs.dm
+++ b/code/modules/mob/living/damage_procs.dm
@@ -8,7 +8,7 @@
 	Returns
 	standard 0 if fail
 */
-/mob/living/proc/apply_damage(var/damage = 0,var/damagetype = BRUTE, var/def_zone = null, var/blocked = 0, var/soaked = 0, var/used_weapon = null, var/sharp = 0, var/edge = 0, var/obj/used_weapon = null)
+/mob/living/proc/apply_damage(var/damage = 0,var/damagetype = BRUTE, var/def_zone = null, var/blocked = 0, var/soaked = 0, var/used_weapon = null, var/sharp = FALSE, var/edge = FALSE, var/obj/used_weapon = null)
 	if(Debug2)
 		to_world_log("## DEBUG: apply_damage() was called on [src], with [damage] damage, and an armor value of [blocked].")
 	if(!damage || (blocked >= 100))
diff --git a/code/modules/mob/living/silicon/robot/drone/drone_damage.dm b/code/modules/mob/living/silicon/robot/drone/drone_damage.dm
index 37731dd3452..240cfb10e93 100644
--- a/code/modules/mob/living/silicon/robot/drone/drone_damage.dm
+++ b/code/modules/mob/living/silicon/robot/drone/drone_damage.dm
@@ -1,5 +1,5 @@
 //Redefining some robot procs, since drones can't be repaired and really shouldn't take component damage.
-/mob/living/silicon/robot/drone/take_overall_damage(var/brute = 0, var/burn = 0, var/sharp = 0, var/used_weapon = null)
+/mob/living/silicon/robot/drone/take_overall_damage(var/brute = 0, var/burn = 0, var/sharp = FALSE, var/used_weapon = null)
 	bruteloss += brute
 	fireloss += burn
 
@@ -11,7 +11,7 @@
 	if(bruteloss<0) bruteloss = 0
 	if(fireloss<0) fireloss = 0
 
-/mob/living/silicon/robot/drone/take_organ_damage(var/brute = 0, var/burn = 0, var/sharp = 0, var/emp = 0)
+/mob/living/silicon/robot/drone/take_organ_damage(var/brute = 0, var/burn = 0, var/sharp = FALSE, var/emp = 0)
 	take_overall_damage(brute,burn)
 
 /mob/living/silicon/robot/drone/heal_organ_damage(var/brute, var/burn)
diff --git a/code/modules/mob/living/silicon/robot/robot_damage.dm b/code/modules/mob/living/silicon/robot/robot_damage.dm
index 3c7999be3c0..0bad703cfaa 100644
--- a/code/modules/mob/living/silicon/robot/robot_damage.dm
+++ b/code/modules/mob/living/silicon/robot/robot_damage.dm
@@ -62,7 +62,7 @@
 	var/datum/robot_component/picked = pick(parts)
 	picked.heal_damage(brute,burn)
 
-/mob/living/silicon/robot/take_organ_damage(var/brute = 0, var/burn = 0, var/sharp = 0, var/edge = 0, var/emp = 0)
+/mob/living/silicon/robot/take_organ_damage(var/brute = 0, var/burn = 0, var/sharp = FALSE, var/edge = FALSE, var/emp = 0)
 	var/list/components = get_damageable_components()
 	if(!components.len)
 		return
@@ -110,7 +110,7 @@
 
 		parts -= picked
 
-/mob/living/silicon/robot/take_overall_damage(var/brute = 0, var/burn = 0, var/sharp = 0, var/used_weapon = null)
+/mob/living/silicon/robot/take_overall_damage(var/brute = 0, var/burn = 0, var/sharp = FALSE, var/used_weapon = null)
 	if(status_flags & GODMODE)	return	//godmode
 	var/list/datum/robot_component/parts = get_damageable_components()
 
diff --git a/code/modules/multiz/movement.dm b/code/modules/multiz/movement.dm
index 4b6d666709c..1fb93aae858 100644
--- a/code/modules/multiz/movement.dm
+++ b/code/modules/multiz/movement.dm
@@ -327,7 +327,7 @@
 // Things that prevent objects standing on them from falling into turf below
 /obj/structure/catwalk/CanFallThru(atom/movable/mover as mob|obj, turf/target as turf)
 	if((target.z < z) && !hatch_open)
-		return FALSE // TODO - Technically should be density = 1 and flags |= ON_BORDER
+		return FALSE // TODO - Technically should be density = TRUE and flags |= ON_BORDER
 	if(!isturf(mover.loc))
 		return FALSE // Only let loose floor items fall. No more snatching things off people's hands.
 	else
@@ -345,7 +345,7 @@
 	if(!isturf(mover.loc))
 		return FALSE // Only let loose floor items fall. No more snatching things off people's hands.
 	else
-		return FALSE // TODO - Technically should be density = 1 and flags |= ON_BORDER
+		return FALSE // TODO - Technically should be density = TRUE and flags |= ON_BORDER
 
 // So you'll slam when falling onto a grille
 /obj/structure/lattice/CheckFall(var/atom/movable/falling_atom)
diff --git a/code/modules/projectiles/gun.dm b/code/modules/projectiles/gun.dm
index bdfd61a7d4a..4979cc743c4 100644
--- a/code/modules/projectiles/gun.dm
+++ b/code/modules/projectiles/gun.dm
@@ -709,7 +709,7 @@
 		in_chamber.on_hit(M)
 		if(in_chamber.damage_type != HALLOSS && !in_chamber.nodamage)
 			log_and_message_admins("[key_name(user)] commited suicide using \a [src]")
-			user.apply_damage(in_chamber.damage*2.5, in_chamber.damage_type, "head", used_weapon = "Point blank shot in the mouth with \a [in_chamber]", sharp=1)
+			user.apply_damage(in_chamber.damage*2.5, in_chamber.damage_type, "head", used_weapon = "Point blank shot in the mouth with \a [in_chamber]", sharp = TRUE)
 			user.death()
 		else if(in_chamber.damage_type == HALLOSS)
 			to_chat(user, "<span class = 'notice'>Ow...</span>")
diff --git a/code/modules/projectiles/guns/launcher/bows.dm b/code/modules/projectiles/guns/launcher/bows.dm
index 3df5d1de498..7787ea027e5 100644
--- a/code/modules/projectiles/guns/launcher/bows.dm
+++ b/code/modules/projectiles/guns/launcher/bows.dm
@@ -6,8 +6,8 @@
 	item_state = "bolt"
 	throwforce = 8
 	w_class = ITEMSIZE_NORMAL
-	sharp = 1
-	edge = 0
+	sharp = TRUE
+	edge = FALSE
 
 /obj/item/weapon/arrow/energy
 	name = "hardlight arrow"
@@ -17,8 +17,8 @@
 	item_state = "bolt"
 	throwforce = 10
 	w_class = ITEMSIZE_NORMAL
-	sharp = 0
-	edge = 1
+	sharp = FALSE
+	edge = TRUE
 
 /obj/item/weapon/arrow/energy/throw_impact(atom/hit_atom)
 	. = ..()
diff --git a/code/modules/reagents/machinery/dispenser/supply.dm b/code/modules/reagents/machinery/dispenser/supply.dm
index 984d7786a82..ffbad53fab1 100644
--- a/code/modules/reagents/machinery/dispenser/supply.dm
+++ b/code/modules/reagents/machinery/dispenser/supply.dm
@@ -1,7 +1,7 @@
 /datum/supply_pack/chemistry_dispenser
 	name = "Reagent dispenser"
 	contains = list(
-			/obj/machinery/chemical_dispenser{anchored = 0}
+			/obj/machinery/chemical_dispenser{anchored = FALSE}
 		)
 	cost = 25
 	containertype = /obj/structure/largecrate
@@ -11,7 +11,7 @@
 /datum/supply_pack/beer_dispenser
 	name = "Booze dispenser"
 	contains = list(
-			/obj/machinery/chemical_dispenser/bar_alc{anchored = 0}
+			/obj/machinery/chemical_dispenser/bar_alc{anchored = FALSE}
 		)
 	cost = 25
 	containertype = /obj/structure/largecrate
@@ -21,7 +21,7 @@
 /datum/supply_pack/soda_dispenser
 	name = "Soda dispenser"
 	contains = list(
-			/obj/machinery/chemical_dispenser/bar_soft{anchored = 0}
+			/obj/machinery/chemical_dispenser/bar_soft{anchored = FALSE}
 		)
 	cost = 25
 	containertype = /obj/structure/largecrate
diff --git a/code/modules/surgery/face.dm b/code/modules/surgery/face.dm
index b670497fc94..fc10ecfcca4 100644
--- a/code/modules/surgery/face.dm
+++ b/code/modules/surgery/face.dm
@@ -116,7 +116,7 @@
 	var/obj/item/organ/external/affected = target.get_organ(target_zone)
 	user.visible_message("<span class='danger'>[user]'s hand slips, tearing skin on [target]'s face with \the [tool]!</span>", \
 	"<span class='danger'>Your hand slips, tearing skin on [target]'s face with \the [tool]!</span>")
-	target.apply_damage(10, BRUTE, affected, sharp=1, sharp=1)
+	target.apply_damage(10, BRUTE, affected, sharp = TRUE, sharp = TRUE)
 
 ///////////////////////////////////////////////////////////////
 // Face Cauterizing Surgery
diff --git a/code/modules/surgery/generic.dm b/code/modules/surgery/generic.dm
index a5ccd15050f..d26ea6c0c18 100644
--- a/code/modules/surgery/generic.dm
+++ b/code/modules/surgery/generic.dm
@@ -257,7 +257,7 @@
 		msg = "<span class='danger'>[user]'s hand slips, damaging several organs in [target]'s lower abdomen with \the [tool]!</span>"
 		self_msg = "<span class='danger'>Your hand slips, damaging several organs in [target]'s lower abdomen with \the [tool]!</span>"
 	user.visible_message(msg, self_msg)
-	target.apply_damage(12, BRUTE, affected, sharp=1)
+	target.apply_damage(12, BRUTE, affected, sharp = TRUE)
 
 ///////////////////////////////////////////////////////////////
 // Cauterize Surgery
diff --git a/code/modules/surgery/limb_reattach.dm b/code/modules/surgery/limb_reattach.dm
index ecbf1917418..8a25be5b510 100644
--- a/code/modules/surgery/limb_reattach.dm
+++ b/code/modules/surgery/limb_reattach.dm
@@ -74,7 +74,7 @@
 	var/obj/item/organ/external/E = tool
 	user.visible_message("<span class='warning'> [user]'s hand slips, damaging [target]'s [E.amputation_point]!</span>", \
 	"<span class='warning'> Your hand slips, damaging [target]'s [E.amputation_point]!</span>")
-	target.apply_damage(10, BRUTE, null, sharp=1)
+	target.apply_damage(10, BRUTE, null, sharp = TRUE)
 
 ///////////////////////////////////////////////////////////////
 // Limb Connection Surgery
@@ -113,7 +113,7 @@
 	var/obj/item/organ/external/E = tool
 	user.visible_message("<span class='warning'> [user]'s hand slips, damaging [target]'s [E.amputation_point]!</span>", \
 	"<span class='warning'> Your hand slips, damaging [target]'s [E.amputation_point]!</span>")
-	target.apply_damage(10, BRUTE, null, sharp=1)
+	target.apply_damage(10, BRUTE, null, sharp = TRUE)
 
 ///////////////////////////////////////////////////////////////
 // Robolimb Attachment Surgery
@@ -164,4 +164,4 @@
 /datum/surgery_step/limb/mechanize/fail_step(mob/living/user, mob/living/carbon/human/target, target_zone, obj/item/tool)
 	user.visible_message("<span class='warning'> [user]'s hand slips, damaging [target]'s flesh!</span>", \
 	"<span class='warning'> Your hand slips, damaging [target]'s flesh!</span>")
-	target.apply_damage(10, BRUTE, null, sharp=1)
+	target.apply_damage(10, BRUTE, null, sharp = TRUE)
diff --git a/code/modules/vore/smoleworld/smoleworld_vr.dm b/code/modules/vore/smoleworld/smoleworld_vr.dm
index 7f0529805a0..f9d1c92a642 100644
--- a/code/modules/vore/smoleworld/smoleworld_vr.dm
+++ b/code/modules/vore/smoleworld/smoleworld_vr.dm
@@ -357,7 +357,7 @@
 //	desc = "Lets burn rubber!"
 //	icon = 'icons/vore/smoleworld_vr.dmi'
 //	icon_state = "smolecarA"
-//	anchored = 0
+//	anchored = FALSE
 //	buckle_movable = 1
 //	var/carry_type = /obj/item/smolecar
 //