I staggered over the finishing line when the penny dropped about the 'context' followed by a delve through a rather long list on the Internet.
I do have a couple of queries though. What's the implication of the first line of the preamble? 'Solvers must act in keeping with the theme...
before entering the answers etc'. I just entered the answers. Am I missing something?
+ the puzzle title 'Marks' is it that to do with the highlighted eponym (which was the key to the whole thing for me) and the symbol?
Ta!