grim/purple-objects-docbook

Added a lot of description to the graphs page including and example class as well as an example enum.
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd">
<book id="purple-objects" xmlns:xi="http://www.w3.org/2003/XInclude">
<bookinfo>
<title>Purple Objects</title>
</bookinfo>
<xi:include href="about.xml"/>
<xi:include href="graphs.xml"/>
<xi:include href="plugins.xml"/>
<xi:include href="plugin-loaders.xml"/>
<xi:include href="accounts.xml"/>
<xi:include href="conversations.xml"/>
<xi:include href="ciphers.xml"/>
<xi:include href="whiteboards.xml"/>
<xi:include href="proxies.xml"/>
<xi:include href="connections.xml"/>
<xi:include href="filetransfers.xml"/>
<xi:include href="pounces.xml"/>
<xi:include href="todo.xml"/>
<xi:include href="revhistory.xml"/>
</book>