When used with the "Redirect category shell" (Rcat shell) template:

This page is a redirect. The following categories are used to track and monitor this redirect: From a writer(s): This is a redirect from a writer (or writers) to a related topic usually about one of their works. When appropriate, protection levels are automatically sensed, described and categorized.

Template {{Redirect category shell}} may be used to add one or more rcat templates, along with their parameters and categories, to a redirect. For more information see the documentation page below.

When used by itself: