Bonjour,
I think you may be able to help me on this: I would like to type an
exercise with its solution in my text, and have the dvi display something
like "Exercise 172.91: <the question(s)>" at the right place, and in a
last section of the chapter, "Solution of 172.91: <the solution(s)>".
It would involve being able to store the solutions (with the numbers of
the exercises they correspond to) until the end of the chapter, and then
dump everything in an automatically-added section, but since I'm no latex
guru and just a lyx beginner, I'm quite unable to do it...
JP