anchor.diff:  				pressure = text2num(pressure)
   				. = TRUE
   			if(.)
  -				target_pressure = clamp(pressure, 0, MAX_OUTPUT_PRESSURE)
  +				target_pressure = clamp(pressure, 0, ONE_ATMOSPHERE*100)
   				investigate_log("was set to [target_pressure] kPa by [key_name(usr)]", INVESTIGATE_ATMOS)
   	update_icon()
   
  
positive.code: 		on = !on
  
  	if("set_output_pressure" in signal.data)
  		target_pressure = clamp(text2num(signal.data["set_output_pressure"]),0,ONE_ATMOSPHERE*50)
  
  	if(on != old_on)
  		investigate_log("was turned [on ? "on" : "off"] by a remote signal", INVESTIGATE_ATMOS)
  
negative.code: Passive gate is similar to the regular pump except:
  * It doesn't require power
  * Can not transfer low pressure to higher pressure (so it's more like a valve where you can control the flow)
  * Passes gas when output pressure lower than target pressure
  
  */
  
  