I received copies of the multilingual "Ada & #Zangemann" books by @cfeditions . They did an amazing job. Was a bit sceptical when I first heard about the idea of multilingual versions, but I love the result with this great format!! Great for schools! Job well done!! 
@kirschner @cfeditions Thanks Matthias, glad you like it ! It was challenging indeed 
(moving to a rectangle book from a square one, adding another language without braking the narration). I hope Sandra will like it also. FYI I wrote a post on the Making-of https://polylogue.org/ada-le-livre-et-ses-rameaux/
PolylogueAda, le livre et ses rameaux
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Great documentation from what I can understand.
@cfeditions @hervelc