2.11BSD/src/share/learn/editor/L2.1a

#print
Now to check that you can type, a line will
be typed at you: type it back in, and then type "ready".
Type the line exactly as it is typed at you.

echo pack my box with five dozen liquor jugs
#copyin
#user
#uncopyin
#match echo pack my box with five dozen liquor jugs
#log
#next
2.2a 1
3.1a 2