[pcthrowaway]

Ed is the standard text editor - https://www.gnu.org/fun/jokes/ed-msg.en.html

> Let's look at a typical novice's session with the mighty ed:

    golem$ ed

    ?
    help
    ?
    ?
    ?
    quit
    ?
    exit
    ?
    bye
    ?
    hello?
    ?
    eat flaming death
    ?
    ^C
    ?
    ^C
    ?
    ^D
    ?

[u801e]

If they're lucky, they'll press Q. Otherwise, ^Z will work :)