Hi,
If you superscript your exponents as you type, there is no need to select
them in order to format them. When you come to a place where you need to
insert an exponent, press Shift+Cntrl+=, type the exponent, and then press
Cntrl+Spacebar to return to ordinary formatting. I personally find this much
faster and easier than going back and selecting the characters to format
after they are already typed. Formatting as you type requires less keystrokes
and does not create any reason to reach for the mouse.