from lars hellström re greek in math: Allowing greek letters does however raise some interesting problems. Many of the greek letters have var-forms in the current math fonts, so which form should the input letter select? E.g. \epsilon and \varepsilon are hardly distinct enough to count as different letters/symbols, they are merely different glyphs, so which one should it be? I for one much prefer \varepsilon, so I would like to have some interface which lets the user select this. in fact all the variant greek letters (that i am familiar with) *do* have distinct unicodes. the problem of how they'll actually be used still remains. i'd also like to point out that there text strings can legitimately be embedded in math expressions, and math can be embedded in those text strings ... (i don't think i've seen any deeper nesting in the wild, but such could be invented), so the transitions do have to be taken into account. -- bb