Mark,
Type an underscore to start a subscript, and type a space at the end of the
subscript to make it appear as it should. Also, type a space at the end of a
fraction to make it build up. So for your example you would type
N_S{space}/N_P{space}{space}=E_S{space}/E_P{space}{space}
The result will appear as you want it.
In a similar way, you can use a caret (^) to start a superscript.
--
Regards,
Jay Freedman
Microsoft Word MVP
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