add symbol or text outside of left or right margin

[big john bassett hound]

How do I add a sysmbol or letter to the left or right of the left or right
margins>

I need to add a marker of some kind to parts of documents that will note a
change has been made to that section, line, paragraph or page?

 

[Suzanne S. Barnhill]

See http://sbarnhill.mvps.org/WordFAQs/MarginalText.htm for suggestions.