SuperSub is a Google Chrome extension that allows you to input superscripts, subscripts, and other scientific and mathematical symbols directly into Google Sheets and/or Google Forms. It is useful for students and teachers who create Excel tables and charts. Superscripts, Subscripts, and other mathematical symbols are more challenging to type. 

If you want to type in a superscript, subscript, or other mathematical symbols, a popup window will appear to guide you. These symbols are usually used in biology, math, physics, chemistry, and other fields. In addition, you can use these symbols for scientific literature.

The key feature of this tool is that you can type any scientific and mathematical symbols directly into Google Sheets or Google Forms. You can use these symbols for tables and charts.