!!! Overview
A NOT search filter is a type of [LDAP Search Filter] that is intended to serve as a container that holds exactly one embedded search filter.  The [{$pagename}] is essentially an inverse operation, and in order for an entry to match a [{$pagename}], it must not match the embedded filter.

[{$pagename}] may be represented as a string by enclosing the entire filter in parentheses and placing an exclamation point just after the opening parentheses.  


For [example], a filter of "{{(!(objectClass=person))}}" will only match an entry if it does not have an objectClass value of "person".

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