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 domain name: This is a redirect from a domain name to an article about an associated entity or website, which is more often referred to by its official name than by its domain name.
    • Use this redirect link (without piping) when the link in the context specifically concerns the website. Other pages using this link should be updated to replace the text with the redirect target (again, without piping).
    • Use the |domain= parameter to specify the top-level domain name, for categorisation.