This template creates a link to a WP:RFCU (checkuser) page on a user.
Outstanding, and recently declined or completed, checkuser requests are also transcluded onto the WP:RFCU main page. If this template cannot find a subpage for a user, it will form a gray link to the main WP:RFCU page, trying to find [[WP:RFCU#username]] instead.
To make the template return nothing at all when no subpage is found, add the optional parameter cond=n.
This template takes one expected parameter: the exact and correct username (without the prefix "User:") of the RFCU's subject, for instance {{rfcu|John Doe}}. If this is not provided, the default will be "Example".
Names with (or without) equal signs can be given as 1=Username or User=Username, for instance {{rfcu|1=John=Doe}} or {{rfcu|User=John=Doe}}.
This template will provide a default link label, either WP:RFCU page on "John Doe" (if it exists) or There is no WP:RFCU page on "John Doe" (if it doesn't exist). If you wish a different link label, such as "here", provide it as a second unnamed parameter after the username, for instance {{rfcu|John Doe|here}}.