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<section>
<title tab-width="80">What is Apache FOP?</title>
<p>
Apache FOP (Formatting Objects Processor) is the most popular XSL-FO implementation.
It is used to create documents in PDF, PostScript and other formats.
</p>
<p>
XSL (eXtensible Stylesheet Language) is a W3C standard which consists of two parts:
</p>
<ol>
<li>XSL Transformations (XSLT)</li>
<li>XSL Formatting Objects (XSL-FO)</li>
</ol>
<p>
Apache FOP currently supports a large subset of XSL-FO&#160;1.0 and some of the new features
to be introduced with XSL-FO&#160;1.1. Details on the compliance levels can be found on the FOP
website.
</p>
<p>
The software is written in Java and published under a liberal license, the
Apache License version&#160;2.0, which allows commercial use and redistribution.
For details, please read the license text and the license FAQ on the ASF website.
</p>
</section>