Recommendations about usage for the term "users"

Nothing in the “IBM Style Guide: Conventions for Writers and Editors,” which the DITA TC uses as its style guide.
Nothing in “The Global English Style Guide: Writing Clear, Translatable Documentation for a Global Market.”
And I did see “general user” and “user” used in the body text of the book.
Best, Kris Kristen James Eberlein Chair, OASIS DITA Technical Committee Owner, Eberlein Consulting LLC 
Skype: kriseberlein; voice: +1 (919) 622-1501