usr/lib/learn/editor/L40.2b

#print
In the file "section" change all lines ending in the characters
  ",
to end in
  ,"
so that, for example, the line
  He said "I'll come",
becomes
  He said "I'll come,"
and then rewrite the file and type "ready".
#create Ref
This passage contains a few
quoted "strings,"
of which some are "in the middle", and some
"are at the beginning", and some "are at the end,"
but all end with commas.
#create section
This passage contains a few
quoted "strings",
of which some are "in the middle", and some
"are at the beginning", and some "are at the end",
but all end with commas.
#user
#cmp section Ref
#log
#next
40.2c 5