How to write small numbers above text in a text editor?

Question

Text editors

How to write small numbers above text in a text editor? I am attaching an example. Those. some sort of footnote.

Answer 1

only if a text editor is able to do this , the
question, regardless of the name of a particular text editor, is meaningless.

Answer 2

Keyword for subscript and superscript font attribute
Supported in rich-text (word, wordpad, confluence, etc)

Answer 3

Superscripts and Subscripts .