!!! Overview
[{$pagename}] is defined in [OpenID Connect Front-Channel Logout] as a [OPTIONAL] [Boolean] value specifying whether the [OpenID Connect Provider] can pass [iss] ([issuer]) and [sid] ([session ID]) query parameters to identify the [Relying Party] session with the [OpenID Connect Provider] when the [frontchannel_logout_uri] is used. 

If supported, the [sid] [Claim] is also included in [Id_token]s issued by the [OpenID Connect Provider]. If omitted, the default value is false.

!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]