4.3BSD-UWisc/lib/learn/editor/L15.3e

#print
Remember that after typing the '.' which ends an append
you can type ordinary commands at the editor.  Go into
the editor; append the line

washington, d.c.

and then print it with the 'p' command.  Then write it
on a file named "city" and leave the editor and type "ready".
#create Ref
washington, d.c.
#user
#cmp city Ref
#log
#next
15.3f 5