Hi Audrey,
I admit the user guide doesn't cover notes explicitly, though it does mention the keyword (albeit somewhat in passing) in a few places as one of multiple options paired with a list keyword. Notes can be used with any of the list keywords - $listNotes, $tableNotes, $repeatNotes, etc.
Notes can be reported in the context of the top level, use cases, actors, requirements, diagrams, dictionaries, test scenarios and packages. For an example on use cases, take a look at the built-in Project Specification Word template, and just let us know if you have further questions.