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    • I think one of the ideas expressed on Cake and elsewhere is the benefits of having a directory of topics and subtopics, whether in an ugly outline list format or a more elegant graphical sphere drill down format.

      Having some way to explore the topic space would be really cool. How to do so really depends on whether it is stored/conceived internally as a strictly hierarchical graph or some sort of directed acyclic graph. In the first case, some sort of rooted tree would look just fine and make perfect sense, while in the second, some sort of dynamic, three-dimensional set of nodes connected by relationship arcs would probably be necessary.

      Both of them are pretty straightforward to generate in JavaScript libraries that already exist, thankfully enough.