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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE document PUBLIC "-//APACHE//DTD Documentation V2.0//EN" "document-v20.dtd">
<document>
<header>
<title>POI-OpenXML4J - Java API To Access Office Open XML documents</title>
<subtitle>Overview</subtitle>
</header>
<body>
<section>
<title>Overview</title>
<p>OpenXML4J is the POI Project's pure Java implementation of the Open Packaging Conventions (OPC) defined in
<a href="https://ecma-international.org/publications-and-standards/standards/ecma-376/">ECMA-376</a>.</p>
<p>Every OpenXML file comprises a collection of byte streams called parts, combined into a container called a package.
POI OpenXML4J provides a physical implementation of the OPC that uses the Zip file format.</p>
</section>
<section>
<title>History</title>
<p>OpenXML4J was originally developed by
<a href="https://web.archive.org/web/20090611063015/https://www.openxml4j.org/">openxml4j.org</a>,
and was contributed to Apache POI in 2008. The original code is available at
<a href="https://sourceforge.net/projects/openxml4j/">https://sourceforge.net/projects/openxml4j/</a>.
Thanks to the support and guidance of Julien Chable</p>
</section>
</body>
</document>
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