Hi, I see in the LuaTeX the \Uoverdelimiter and \Uunderdelimiter commands. Is there a sensible/peferred way to create a mathematics fraction that uses a particular glyph for the horizontal rule between the numerator and denominator?
(to be clear I am looking for a command that acts like \frac{a}{b} not like
the a/b that one can get with \Uskewed)
Thanks in advance!
JR
