usr/lib/learn/files/L13.1c

#print
There are two files in this directory whose names begin with
the letter 'r'. On what line do they differ?
Type "answer N", where N is the line number where they
first are different.
#create ref
This is a very short file
which contains several lines
some one of which will be changed
in the other version, and your
job is to find out which.
#create refnew
This is a very short file
which contains several lines
some  one of which will be changed
in the other version, and your
job is to find out which.
#copyin
#user
#uncopyin
#match 3
#log
#next
13.1d