Take a look at this answer for some tools: <a href="http://stackoverflow.com/questions/405953/generating-uml-from-c-code">http://stackoverflow.com/questions/405953/generating-uml-from-c-code</a> As we're using doxygen already, we could prolly use that to generate some graphs. (cf. <a href="http://www.stack.nl/~dimitri/doxygen/manual/diagrams.html">http://www.stack.nl/~dimitri/doxygen/manual/diagrams.html</a>). Cheers, Philipp <div class="gmail_quote">Op 22 nov. 2014 07:41 schreef "nicholas ferguson" <<a href="mailto:nicholasferguson@wingarch.com">nicholasferguson@wingarch.com</a>>: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div lang="EN-US" link="blue" vlink="purple"><div>At times it can help track down the 'has a" and "is a" relationships. Anyone used a free UML with libreoffice….that proved a good tool? <div><div style="border:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in">From: nicholas ferguson [mailto:<a href="mailto:nicholasferguson@wingarch.com" target="_blank">nicholasferguson@wingarch.com</a>] Sent: Friday, November 21, 2014 8:13 AM To: '<a href="mailto:libreoffice@lists.freedesktop.org" target="_blank">libreoffice@lists.freedesktop.org</a>' Subject: Who knows of a free UML tool to work with libreoffice?</div></div> </div></div> _______________________________________________ LibreOffice mailing list <a href="mailto:LibreOffice@lists.freedesktop.org">LibreOffice@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/libreoffice" target="_blank">http://lists.freedesktop.org/mailman/listinfo/libreoffice</a> </blockquote></div>