From a product or service: This is a redirect from a title that is the name of a product or service to a more general, relevant article such as the company or person that sells it.
This redirect leads to the title in accordance with the naming conventions for common names and can help writing and searches. It is not necessary to replace these redirected links with a piped link.
To a section: This is a redirect from a topic that does not have its own page to a section of a page on the subject. For redirects to embedded anchors on a page, use {{R to anchor}}instead.