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Hi geofablab,

I noticed that your monoclinic body has a beta angle of exactly 120 degrees, which makes it trigonal or hexagonal (in fact the two objects cc_trigonal.stl and cc_monoclinic.stl are identical). Of course beta=120 is allowed in the monoclinic system, but would it not be better to avoid a special case for educational purposes?

Cheers,

Peter