Ah. How exactly is the RESERVE keyword work? Could you provide an example?
Also, I'm not yet as good with Unicode as I'd like to be. What exactly do you mean by Unicode character classes? I saw that there was a group of combining diacritics, but it didn't have ʰ in it, which I see you use often in your examples. Would I be safe just using IPA characters and diacritics? Thanks.