See http://www.unicode.org/versions/Unicode4.0.0/ chapter 9
> Interesting. Is this actually valid at the end of a string? Yes. Figure 9-6 is an example. > Would > <syllable, virama, ZWJ> as an isolated string be rendered differently > from <syllable, virama>? I don't know. <syllable, virama ZWJ> is rendered differently from <syllable, virama, ZWNJ> But I don't know which of both is the default. If it is not at the end of a string then the default is to try to include yet some more in the ligature, ZWJ or ZWNJ prevents this. > But it strikes me that this arrangement, > however sensible within its own writing system, is a distortion of the > regular rules for ZWJ.
