B::Debug - Walk Perl syntax tree, printing debug info about ops
          A simple list version of B::Terse, i.e. B::Concise

SYNOPSIS
           perl -MO=Debug foo.pl
           perl -MO=Debug,-exec foo.pl

With option -exec, walks tree in execute order, otherwise in basic
order.

Copyright (c) 1996, 1997 Malcolm Beattie
Copyright (c) 2008 Reini Urban

       This program is free software; you can redistribute it and/or modify
       it under the terms of either:

       a) the GNU General Public License as published by the Free
       Software Foundation; either version 1, or (at your option) any
       later version, or

       b) the "Artistic License" which comes with this kit.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See either
   the GNU General Public License or the Artistic License for more details.

   You should have received a copy of the Artistic License with this kit,
   in the file named "Artistic".  If not, you can get one from the Perl
   distribution. You should also have received a copy of the GNU General
   Public License, in the file named "Copying". If not, you can get one
   from the Perl distribution or else write to the Free Software Foundation,
   Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.