I'm thinking of putting together a short series of videos talking about the history of Fvwm. Mostly for two reasons:
I already have a channel where I occasionally upload videos of myself solving cryptic crosswords so I am mildly capable of producing videos, albeit I'm no influencer, and the quality is far from production.
But it might be fun to try!
Why AnotherLevel? Well, it was a framework written in the M4 macro language, which Fvwm had support for more or less since the beginning. It's a difficult language to get to grips with, but you can do a lot with it. But the framework as developed by RedHat was really the forerunner for what fvwm-themes became.