Are hang-gliders really in the ATPL syllabus now? They weren't in my CPL syllabus (86% mean, so also-ran!). And is it short or long period longitudinal dynamic stability that they were interested in?
The only good explanation I've ever heard for all this cobblers in the CPL and ATPL written syllabi is that it's basically a test for your ability to read, digest and absorb all of the material in a company's aircraft and operations manuals. Most of the actual material is certainly not useable to most people (although I confess, when working as a university aeronautics lecturer, I have recycled quite a lot of it for baby Engineers, for whom it is often rather more relevant.)
G