stack superscript and subscript
Is there a way (other than resorting to TEX or LaTEX) to follow a character with both a superscript and a subscript stacked in the same character cell? For example, in writing chemical empirical formulas for minerals it is necessary to indicate both the charge and the number of an element, thus:
+2
Ca indicating three calcium ions of charge +2.
3
In Microsoft Word the formula editor makes this easy and convenient.