Spent the day preparing my part of the history colloquium presentation (with the usual interruptions for other project work going on in the office). Also, in the process, I noticed some little bugs with projects we'll be looking at; fixed minor issues in ColDesp and in the AdaptiveDB dev site. My bit of the presentation is the XML component, which tends to be difficult to explain in a useful way, so I've created a series of graphics which I think might help. These should be useful for other presentations too.