Hi Kelly >> The code from that is in >> >> https://github.com/latex3/latex3/tree/master/xpackages/xfrontm > I’m currently reading through this and I think I have some related ideas; > although xfrontm is more evolved than my initial thoughts. well, I can't honestly claim that I all of that is needed or in any way in the form I would do it now if I would redo it (haven't looked at it for a long time). But it was certainly representing the thoughts back then and the complexity and interfaces are due to looking at a huge number of different front matter requirements and trying to abstract from them in a useful way. Still, there might be stuff missing or stuff that is over the top. >> My architecture vision talk in India gives a good overview on that >> >> https://www.latex-project.org/publications/indexbyyear/2011/ > I’ve watched this talk a couple of times now and am very excited by its ideas > and the possibilities it offers. I’ll keep this in mind as I work on the class. Eventually I really want to get back to that, after all the code is there and only waiting to be updated to the latest expl3 versions and I think something along those lines is kind of the right thing make a big leap as far as design interfaces are concerned. frank