> > ...Or you could use Quirk on the PC which provides access to the most
> > common factions in T1 fonts via Alt-key combinations:
> > * = alt+0189; * = alt+0188; * = alt 0190, etc., <G>
> If I were to do that though, the fractions wouldn't show up if transferred
> to a Mac would they? The job has to eventually be output from a Mac so I
> need Mac only solutions.
You're right, they wouldn't. I use the XTension William referred to
quite a bit; I think it's indeed called "Type Tricks" these days (and
it does more than just fractions). To format fractions it does
essentially the same thing that you're doing manually now (although
it actually changes the point size and applies baseline shifts rather
than using super- and subscripts), mainly automating the process.
Once you've set preferences for the horizontal and vertical
positioning &c. you can format any selected text containing numerals
and a slash pretty easily.
A couple of caveats in using it: for one thing the results aren't
'live', meaning that if you make a global change in point sizes
you'll have to go back in, 'zero out' the size and position changes,
then reapply the effect; for another, there's a bug that changes the
virgule character to the font *following* the selected text, which I
discovered from using it on fractions of an inch, where I'd used the
Symbol font's inch character -- the workaround is to insert a space
before the mark, make the fraction, then delete the space.
Fraction fonts are available to match a few of the more common text
fonts, like Helvetica -- see
<http://tinyurl.com/70ly> for example
-- but all but perhaps a few of the most common fraction glyphs (like
those available in standard Windows fonts) still have to be made from
separate elements when using such a font.