E:\> copy con tmp.arc
  (prn "hello world!")
  ^Z                       <---- that's a control-Z
  E:\> "C:\User\Programming\Arc\arc3f\arc-f\arc.bat"
  Use (quit) to quit, (tl) to return here after an interrupt.
  <User>tl: (using <files>v1)
  t
  <User>tl: (ls)
  ("tmp.arc")       <--- you should get a list of files and stuff in the current directory, including tmp.arc
  <User>tl: (load "tmp.arc")
  hello world!
  nil
  <User>tl: