ComputerCraft Terminal Glasses Clock

glass = peripheral.wrap("back")
function addBox()
 glass.addBox(1,1,80,10,0xFFFFFF,0.2)
end
function timeDisp()
 time = textutils.formatTime(os.time(), false)
 glass.addText(5,2,"TIME: " .. time, 0xFF0000)
end
function start()
 while true do
   glass.clear()
   addBox()
   timeDisp()
   sleep(0.1)
 end
end