!!! Overview
[{$pagename}] is defined in [RFC 4370] allows a client to request that an operation be processed under a provided [authorization] identity [AUTH] instead of as the current authorization identity associated with the connection. 

Support for the [{$pagename}] is indicated by the presence of the [Object Identifier] ([OID]) "[2.16.840.1.113730.3.4.18]" in  the [supportedControl] attribute within the [rootDSE]

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