|User accounts, authentication: $wgUserrightsInterwikiDelimiter|
|Character used as the separator between username and database name on Special:UserRights.
|Introduced in version:||1.15.0 (r48765)|
|Removed in version:||still in use|
|Other settings: Alphabetical | By function|
Character used as a delimiter when testing for interwiki user rights (In Special:UserRights, it is possible to modify users on different databases if the delimiter is used, e.g. Someuser@enwiki).
It is recommended that you have this delimiter in $wgInvalidUsernameCharacters, or you will not be able to modify the user rights of those users via Special:UserRights.