From a shortcut: This is a redirect from a shortcut in any namespace to a page in any namespace.
Shortcuts are wikilinked on community pages, talk pages, and edit summaries, but not in mainspace articles.
To a section: This is a redirect from a title for a "minor topic or title" to a comprehensive-type article section which covers the subject (implicitly, not notable enough to have a separate article).
When appropriate, protection levels are automatically sensed, described and categorized.
