anchor.diff:  			EG.dismantle()
   
   /datum/subsystem/air/proc/setup_allturfs(z_level)
  -	active_turfs.Cut()
   	var/z_start = 1
   	var/z_finish = world.maxz
   	if(1 <= z_level && z_level <= world.maxz)
  
positive.code: 
  
  /datum/subsystem/air/Initialize(timeofday, zlevel)
  	setup_atmos_machinery(zlevel)
  	setup_allturfs(zlevel)
  	setup_pipenets(zlevel)
  	..()
  
  
negative.code: 	for (var/obj/machinery/atmospherics/AM in atmos_machinery)
  		if (z_level && AM.z != z_level)
  			continue
  		AM.build_network()
  