anchor.diff:  /obj/machinery/door/firedoor/examine()
   	set src in view()
   	. = ..()
  +	
   	if(pdiff >= FIREDOOR_MAX_PRESSURE_DIFF)
   		usr << "<span class='warning'>WARNING: Current pressure differential is [pdiff]kPa! Opening door may result in injury!</span>"
   
  
positive.code: 			o += "<span class='warning'>"
  		else
  			o += "<span style='color:blue'>"
  		o += "[celsius]?C</span> "
  		o += "<span style='color:blue'>"
  		o += "[pressure]kPa</span></li>"
  		usr << o
  
negative.code: 		if(T && istype(T) && T.zone)
  			var/datum/gas_mixture/environment = T.return_air()
  			for(var/i=1;i<=stats.len;i++)
  				if(stats[i] == "pressure")
  					rstats[i] = environment.return_pressure()
  				else
  					rstats[i] = environment.vars[stats[i]]
  		else if(istype(T, /turf/simulated))
  			rstats = null // Exclude zone (wall, door, etc).
  		else if(istype(T, /turf))
  