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Right now I'm writing Opentype programs, and there are two things I don't get it.
The font has small cap characters and Th ligature. Th is controlled by 'liga' feature (sub T h by TH;), but when the smcp feature is turned on, Th doesn't separate into T(cap) and h(smallcap) and remains still. How can I avoid this?
I'd like to use 'valt' feature, which is used for vertical setting. It's supposed to controll vertical bearings(like moving g up or l down), but I have no idea how to write the code. It's very strange thing for Japanese people to ask about this, but I know almost nothing about Opentype things. If you know anything about this or any good books to learn these, please tell me.