/usr/share/doc/libsignon-qt/html/inherit_graph_2.map is in libsignon-qt-doc 8.56+14.04.20140307-0ubuntu2.
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1 2 3 | <map id="Graphical Class Hierarchy" name="Graphical Class Hierarchy">
<area shape="rect" id="node2" href="$classSignOn_1_1DBusInterface.html" title="SignOn::DBusInterface" alt="" coords="230,5,397,32"/>
</map>
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