1. How to Create superscripts & subscripts
In order to create a superscript such as the 2 in X2 you hit the following keys:
These keystrokes should be followed by the desired digit
It will be necessary to hit the same keys above to get back to normal text
In order to create a subscript such as the 3 in O3 you hit the following keys:
These keystrokes should be followed by the desired digit
It will be necessary to hit the same keys above to get back to normal text + + +
Visuals taken from: