This file is indexed.

/usr/share/doc/plan/copyright is in plan 1.10.1-5build1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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This package was debianized by Adrian Bunk <bunk@fs.tum.de>, based
on original work by Yann Dirson <dirson@debian.org> and
Colin R. Telmer <telmerco@debian.org>.

`plan' was downloaded from http://www.bitrot.de/plan.html

Copyright:

plan is Copyrighted by Thomas Driemeyer, 1993-1999. License to copy, publish,
and distribute is granted to everyone provided that three conditions are met:

- my name and email address, "Thomas Driemeyer <thomas@bitrot.de>" must
  remain in the distribution and any documentation that was not part of
  this distribution. In particular, my name and address must be shown in
  the About popup.
- if you redistribute a modified version, the fact that the version is
  modified must be stated in all places that my name is shown.
- this copyright notice must be included in your distribution.

If these conditions are met, you can do whatever you like. The idea is that
I would be pissed if someone else claimed he wrote the thing, and I don't
want bugs introduced by others attributed to me. Make as much money with it
as you can. Drop me a line, I am curious.

If you put plan on a CD, send me a free copy if your company policy allows
it and you want to. (Not obligatory, I just collect trophies.)

There are no implied or expressed warranties for plan. I do not claim it is
good for anything whatsoever, and if you lose your precious data or your dog
dies this is entirely your problem.