LICENSE

# Introduction

This is a modified copy of the original Xpdf program. To avoid confusion
with the original program, this modified, improved copy is called
xpdf-poppler.

The original author of Xpdf was Derek B. Noonburg <derekn@foolabs.com> and
you can see the copyright that he claimed in the section below.

This modified On the other hand, xpdf-poppler is maintained it is now
maintained by Rogério Theodoro de Brito <rbrito@ime.usp.br>, with assistance
from a large number of knowledgeable contributors.

# Copyright

## The original copyright notice

Xpdf is copyright 1996-2007 Derek B. Noonburg.

Xpdf is licensed under the GNU General Public License (GPL), version
2.  In my opinion, the GPL is a convoluted, confusing, ambiguous mess.
But it's also pervasive, and I'm sick of arguing.  And even if it is
confusing, the basic idea is good.

In order to cut down on the confusion a little bit, here are some
informal clarifications:

- I don't mind if you redistribute xpdf in source and/or binary form,
  as long as you include all of the documentation: README, man pages
  (or help files), and COPYING.  (Note that the README file contains a
  pointer to a web page with the source code.)

- Selling a CD-ROM that contains xpdf is fine with me, as long as it
  includes the documentation.  I wouldn't mind receiving a sample
  copy, but it's not necessary.

- If you make useful changes to xpdf, please make the source code
  available -- post it on a web site, email it to me, whatever.

For information on commercial licensing and consulting, please see the
Glyph & Cog web site:

    http://www.glyphandcog.com/

## The copyright notice of xpdf-poppler

Changes to the work performed by Rogério Brito are:

    Copyright © 2010, 2011 Rogério Theodoro de Brito

and are licensed under the GPL version 2 (for compatibility with the
existing code) or latter versions.

If you have submitted a change to this work and you wish to claim copyright,
then you can simply file an issue at:

    https://github.com/rbrito/xpdf-poppler/issues