anchor.diff:  	add_fingerprint(user)
   	if(operating)
   		return
  -	
  +
   	if(welded)
   		if(istype(C, /obj/item/weapon/wrench))
   			if(boltslocked)
  
positive.code: 	density = 0
  	obj_integrity = 300
  	max_integrity = 300
  	heat_proof = 1
  	glass = 1
  	var/nextstate = null
  
negative.code: /obj/machinery/door/firedoor/border_only
  	icon = 'icons/obj/doors/edge_Doorfire.dmi'
  	flags = ON_BORDER
  	CanAtmosPass = ATMOS_PASS_PROC
  
  /obj/machinery/door/firedoor/border_only/CanPass(atom/movable/mover, turf/target, height=0)
  	if(istype(mover) && mover.checkpass(PASSGLASS))
  