texinfo/contrib/perldoc-all/README

  Copyright 2013-2019 Free Software Foundation, Inc.

  Copying and distribution of this file, with or without modification,
  are permitted in any medium without royalty provided the copyright
  notice and this notice are preserved.

This stuff is about making Texinfo out of the standard Perl *.pod files.
The results are at http://www.gnu.org/software/perl/manual.

The idea is to unpack the perl distribution here, as in,
  wget http://www.cpan.org/src/5.0/perl-5.NN.M.tar.gz  # with right NN.M
  tar xf perl-*.tar.gz
and run (GNU) make.  Aside from the result hopefully being useful in
itself (just copy the .info file to an Info directory), it also serves
as a nontrivial example of using pod2texi.