MediaWiki:Apihelp-options-extended-description
From MoodleDocs
Only options which are registered in core or in one of installed extensions, or options with keys prefixed with userjs-
(intended to be used by user scripts), can be set.
Note: You are currently viewing documentation for Moodle 3.1. Up-to-date documentation for the latest stable version of Moodle is probably available here: Apihelp-options-extended-description.