*.shapes files are from the OSX App Shapes (http://shapesapp.com/) It's hoped that this diagrams can be replaced by something from a multi-platform tool such as: * Dia * http://sphinx-doc.org/ext/graphviz.html (see http://graphviz.org/content/cluster as a possible example) * aafig (https://bitbucket.org/birkenfeld/sphinx-contrib)