Superscript - %su
A font must be selected using %fn, before %su is used. All text following %su
will be in superscript style. A grave accent (%`su) is used to return to the
previous font setting.
i=winio@('%fn[arial]Einstein said %tsE=MC%su2%`su.',1.8D0)
This is the result of the examples above for %su and %sd used together. In
general, scaled down fonts are undesirable as they may become unreadable in
lower screen resolutions.