hello world oc

function os.sleep(timeout)
  checkArg(1, timeout, "number", "nil")
  local deadline = computer.uptime() + (timeout or 0)
  repeat
    event.pull(deadline - computer.uptime())
  until computer.uptime() >= deadline
end
gpu.set(1,1,"Hello World!")
os.sleep(5000)
gpu.set(1,1,"Hello World!")