Superscripts and subscripts are on the "Superscripts and subscripts" palette
on the Equation Editor toolbar. Insert the appropriate template for the
superscript and type it into the dotted box. It will be correctly formatted
automatically.

--
Suzanne S. Barnhill
Microsoft MVP (Word)
Words into Type
Fairhope, Alabama USA
Word MVP FAQ site: http://word.mvps.org
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"Desheng" wrote in message
...
I constantly use Microsoft Equation 3.0 to write equations. But one
problem I
always encounter and I had never been able to figure out an answer is how
to
make a letter superscript. I believe I have explored every option that I
know
of. In the "size" selection, there are only subscript and sub-subsubscipt.
Where is the superscript?
Thanks for helping!