I can just see some users' reactions:
Isn't it cute: I can say
+-----------------------------+
| |
| |
| |
| S Q U A R E D |
| |
| |
| |
+-----------------------------+
E=mc
> "... and given the equation X<sup>n</> + Y<sup>n</> = Z
> <sup>n</> we will show..."
I think we ought to be saying that <sup> and <sub> can be used on their
own for isolated single expressions with no operators, but that if you
want operators, you have to say <math>X<sup>n</sup> + Y<sup>n</sup> =
Z<sup>n</sup></math> (with omissible spacing, like TeX) so that the
display engine can make sense of the formatting. Otherwise we'll only
get a storm of complaints.
///Peter