computercraft Big Reactor program

mon = peripheral.wrap("monitor_0")
pr = peripheral.wrap("back")
mon.setTextColor(colors.white)

if pr.getConnected() == false then
  term.clear()
  term.setCursorPos(8,5)
  print("Sorry but this computer couldn")
  term.setCursorPos(8,6)
  print("connect to the reactor.")
else

while true do
  term.clear()
  mon.clear()
  term.setCursorPos(1,1)
  mon.setCursorPos(1,1)
   if pr.getActive() == true then
     onoff = "ON"
   else
     onoff = "OFF"
   end

  print("Reactor Status: "..onoff)
  mon.write("Reactor Status: "..onoff)
  st = pr.getEnergyStored()

  term.setCursorPos(14,10)
  mon.setCursorPos(10,9)
  print("RF Stored: ".. st)
  mon.write("RF Stored: "..st)

   if st <= 1000000 then
     pr.setActive(true)
   elseif st >= 9950000 then
     pr.setActive(false)
   end

  tc = pr.getCasingTemperature()
  term.setCursorPos(25,1)
  mon.setCursorPos(1,4)
  print("Casing Temp: ".. tc)
  mon.write("Casing Temp: "..tc)

  tf = pr.getFuelTemperature()
  term.setCursorPos(25,2)
  mon.setCursorPos(1,5)
  print("Fuel Temp: ".. tf)
  mon.write("Fuel Temp: "..tf)

  fa = pr.getFuelAmount()
  fm = pr.getFuelAmountMax()
  term.setCursorPos(1,2)
  mon.setCursorPos(1,2)
  print("Fuel lvl: ".. fa .."/".. fm)
  mon.write("Fuel lvl: "..fa.."/"..fm)
  gr = pr.getEnergyProducedLastTick()
   if gr == 0 then
   else
    term.setCursorPos(10,13)
    mon.setCursorPos(6,11)
    print("Generating ".. gr .." RF/Tick")
    mon.write("Generating "..gr.." RF/TICK")
   end

  ra = pr.getFuelReactivity()
  term.setCursorPos(25,3)
  print("Reactive Lvl: ".. ra .."%")
  mon.setCursorPos(1,6)
  mon.write("Reactive Lvl: ".. ra .."%")
  sleep(1)
end
end