From an alternative name: This is a redirect from a title that is another name, a pseudonym, a nickname, or a synonym of the target or of an associated name. It leads to the title in accordance with the naming conventions for common names and can help writing. It is not necessary to replace these redirected links with a piped link. For more information, see the category.
From a page move: This is a redirect from a page that has been moved/renamed. This page was kept as a redirect to avoid breaking links that may have been made, both internally and externally, to the old article title. This template automatically tags any redirect that results from a page move. For more information, see the category.
With possibilities: This is a redirect from a subject that potentially could be expanded into an article or other type of associated Wikipedia page. The topic described by the title is more detailed than what is currently provided on the target page, or section of that page. For more information, follow the category link.
When the target page becomes too large, this redirect may be replaced with an article carved out of the target page. See also Template:R to section, and when appropriate, use both together.