anchor.diff:  
   	air.react()
   
  -	if(air.check_tile_graphic())
  -		update_visuals(air)
  +	update_visuals(air)
   
   	if(air.temperature > FIRE_MINIMUM_TEMPERATURE_TO_EXIST)
   		hotspot_expose(air.temperature, CELL_VOLUME)
  
positive.code: 
  		air.merge(giver)
  
  		if(air.check_tile_graphic())
  			update_visuals(air)
  
  		return 1
  
  
negative.code: 	archived_cycle = SSair.times_fired
  
  /turf/simulated/proc/update_visuals(datum/gas_mixture/model)
  	model.check_tile_graphic()
  	if (atoms_overlay_type == model.graphic)
  		return
  	overlays.Cut()
  	var/siding_icon_state = return_siding_icon_state()
  	if(siding_icon_state)
  