BPFK Section: lerfu Shifts
I assum that {zai BY} defines a character set much as {ge'o} et al did, with the advantage of being openended about possibilities (Tengwar, for example, or Devanagari}, provided we agree on what letter stands for what alphabet. I suppose that, outside of specialists in languages or culture, no more than a dozen alphabets are actually used (math rarely gets beyond Greek, German, and Hebrew and it is about as character greedy as they come).
Does something deal with non-alphabetic symbols (implication arrows are my favorite) or are they dealt just with using {bu} and not being specific about what the resulting character looks like?
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