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

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:

  • From a former name: This is a redirect from a former name or working title of the target topic to the new name that resulted from a name change.