Merge branch 'master' of https://github.com/raspy-on-osu/Citadel-Station-13 into ventcrawl-refactor

code/modules/atmospherics/environmental/LINDA_turf_tile.dm

@@ -49,6 +49,7 @@
 		SSair.add_to_active(T)
 	return ..()
 
+/// Function for Extools Atmos
 /turf/proc/update_air_ref()
 
 /////////////////GAS MIXTURE PROCS///////////////////

code/modules/atmospherics/machinery/portable/canister.dm

@@ -261,7 +261,7 @@
 			new /obj/item/stack/sheet/metal (loc, 5)
 	qdel(src)
 
-obj/machinery/portable_atmospherics/canister/welder_act(mob/living/user, obj/item/I)
+/obj/machinery/portable_atmospherics/canister/welder_act(mob/living/user, obj/item/I)
 	..()
 	if(user.a_intent == INTENT_HARM)
 		return FALSE

code/modules/atmospherics/multiz.dm

@@ -1,4 +1,5 @@
-obj/machinery/atmospherics/pipe/simple/multiz ///This is an atmospherics pipe which can relay air up a deck (Z+1). It currently only supports being on pipe layer 1
+/// This is an atmospherics pipe which can relay air up/down a deck.
+/obj/machinery/atmospherics/pipe/simple/multiz
 	name = "multi deck pipe adapter"
 	desc = "An adapter which allows pipes to connect to other pipenets on different decks."
 	icon_state = "multiz_pipe"
@@ -24,6 +25,4 @@ obj/machinery/atmospherics/pipe/simple/multiz ///This is an atmospherics pipe wh
 	if(above)
 		nodes += above
 		above.nodes += src //Two way travel :)
-		return ..()
-	else
-		return ..()
+	return ..()