WCHA

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Mentioned in a hatnote: This is a redirect from a title that is mentioned in a hatnote at the redirect target. The mention is usually atop the target article. It may, however, be directly under a section header, or in another article's hatnote (whenever the hatnote is under a section, {{R to section}} should also be used).
- The titles of redirects mentioned in hatnotes may refer to a subject other than that of the target page. It is possible that this redirect may need to be retargeted, or become an article under its own title (see {{R with possibilities}}). If the title is a good candidate for a Wiktionary link, it may also be added.

From an initialism: This is a redirect from an initialism to a related topic, such as the expansion of the initialism.
- Use {{R from acronym}} instead for abbreviations that are pronounced as words, such as NATO and RADAR.
- Use {{R from short name}} instead for the initials of a person's name.
- Use {{R from abbreviation}} instead for any other length reduction.