Comment 1 for bug 522758

From /usr/share/doc/sl/copyright:

 Copyright 1993,1998 Toyoda Masashi (<email address hidden>)

 Everyone is permitted to do anything on this program including copying,
 modifying, and improving, unless you try to pretend that you wrote it.
 i.e., the above copyright notice has to appear in all copies.
 THE AUTHOR DISCLAIMS ANY RESPONSIBILITY WITH REGARD TO THIS SOFTWARE.

Presumably this is translated from the Japanese in the README:

むかしにも投稿された冗談ソフトの sl の豪華版です。
アイデアは借り物ですが、プログラム自体は私のオリジナルです。
a,l,F オプションが有効です。機能は実行して確かめてください。

As such, I'm closing this bug. Please re-open it if you feel that the installed copyright file is in error.