Let me add that if Laure's suggestion is that we work on an xmca collectively-authored text(book), I would be all in favor! Martin On Apr 24, 2014, at 8:42 AM, Laure Kloetzer <laure.kloetzer@gmail.com<mailto:laure.kloetzer@gmail.com>> wrote: If not: why wouldn't we edit this textbook that we need ?