\nicefrac is a very useful tool for small fractions. In the documentation, it says that a font command optional argument can be given, but no example is provided. Specification:
we only have a reference to
fntguide.dvi. However, that guide is a bit cryptic.
Is it possible to have a few examples how
fontcmd can be specified? Let's say I would want (a) a fraction using slightly bigger font; (b) a fraction using roman font numbers; (c) a fraction using bold numbers; (d) a fraction using something wild (to your appreciation ;-).