Pressbooks
==========

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[Pressbooks](http://pressbooks.com) is a book content management system which exports in multiple formats: ebooks, webbooks, print-ready [PDF][], and various XML flavours. [Pressbooks](http://pressbooks.com) is built on top of [WordPress Multisite](http://codex.wordpress.org/Glossary#Multisite), and makes significant changes to:
  * admin interface (customized for books and other structured documents, such as magazines, journals, reports, etc.);
  * web presentation layer (again, customized for books and structured documents); and
  * export routines.

Pressbooks is free software, released under the GPL v.2.0 license.

Our web/ebook and [PDF][] exports are all driven by HTML+CSS. XML outputs have no styling.

  [PDF]: http://pressbooks.com/prince        "Note: we use the non-free software Prince XML for PDF export."


Important!
----------

 * Do ___NOT___ use Pressbooks with an existing WordPress site.
 * Please use with a ___FRESH___ install of [WP ___MULTISITE___](http://codex.wordpress.org/Glossary#Multisite).
 * If this makes you nervous, please use our free site: [Pressbooks](http://pressbooks.com), or contact us.


Try pressbooks.com
------------------

While Pressbooks is open source, we recommend you try [Pressbooks.com](http://pressbooks.com) before deciding whether or not you wish to host and maintain your own instance. We can also host and maintain an instance for you.

Installing the Plugin
---------------------

Pressbooks is not for use on an existing blog. Instead it should be used with a fresh, multisite WordPress install.

Unless you are installing Pressbooks for development, you should use the version from the [WordPress Plugin Directory](https://wordpress.org/plugins/pressbooks) rather than this version. If you need to install Pressbooks for development, please see the ["Contributing"](CONTRIBUTING.md) guide.

Requirements
------------

Pressbooks works with PHP 5.6.X and WordPress 4.6.1. Lower versions are not supported.

Disclaimers
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The Pressbooks plugin is supplied "as is" and all use is at your own risk.

More Details
------------

See readme.txt for installation details.