4.3BSD-UWisc/lib/learn/editor/L12.2b

#print
Now use the editor to copy file "first"
to file "second".
Then type "ready".
#create Ref
Bell Telephone Laboratories
 600 Mountain Avenue
  Murray Hill, New Jersey 07974
#create first
Bell Telephone Laboratories
 600 Mountain Avenue
  Murray Hill, New Jersey 07974
#user
#cmp Ref second
#log
#next
12.2c 5