In Google Docs, Word, Excel and many other applications you can subscribe and superscribe numbers and letters with just a few clicks.
Excel
How to find and replace: A Guide for Word, Excel and Google Docs
By using the find and replace feature, you can quickly search certain words in your document and make changes to them.
Excel: How to change the background color based on the cell value
Especially for huge MS Excel tables, it is helpful to mark cells with colors, if they contain a certain value.