usr/lib/learn/editor/L21.1b

#print
In this directory there is a file 'fix'.  It contains
a mistyped line.  Print the file; then change that
line and rewrite the file correctly.
Then type "ready".
#create Ref
Bell System Companies include:
American Telephone and Telegraph Company
  Long Lines Division
Western Electric Company
Bell Laboratories
Teletype Corporation
Associated Companies
#create fix
Bell System Companies include:
American Telephone and Telegraph Company
  Long Lines Division
Western Electric Company
Bell Lxxxxtories
Teletype Corporation
Associated Companies
#user
#cmp Ref fix
#log
#next
21.1c 5
21.1e 10