Manual:$wgExperimentalLoginPopup

Language, regional and character encoding settings: $wgExperimentalLoginPopup
Add extra login links that open different kinds of modal dialogs instead of navigating the page.
Introduced in version:1.43.0 (Gerrit change 1032585; git #9b8d4fc6)
Removed in version:1.43.0 (Gerrit change 1047123; git #43c6ae92)
Allowed values:Unspecified
Default value:false
Warning Warning: As of May 2024, this config option is experimental and may be removed or changed in the future.