I sent Peter an email at pretty much the same time as I posted here. He’s replied to my queries a few times already. A very helpful guy.
Being able to add materials to the list in Notepad is great. I’ve just been doing that. I’d like to have the RealMaterialTools call a table rather than listing things on the command line (I’ve got loads of materials I want to list). It’s something I’d like to have a go at scripting myself, but I’m not sure if it’s too tough a task for a beginner (i.e. me). I’d also like to see if I can get it to return a mass centroid for a collection of objects with different materials. That would be very useful to me.