Manual:$wgShowDiffToggleSwitch

Miscellaneous settings: $wgShowDiffToggleSwitch
Specifies if users should see the inline switch in diff pages.
Introduced in version:1.41.0 (Gerrit change 902539; git #360182a5)
Deprecated in version:1.41.0 (Gerrit change 941929; git #b20ea3a5)
Removed in version:Still in use
Allowed values:(boolean)
Default value:false
Warning Warning: This is a temporary feature flag.