!!! Overview
[{$pagename}] is an [Extended Flags] and one of the [EDirectory Extended LDAP Flags]When set this indicates this is a [Non-replicated] [attribute]  and prevented from synchronizing with other [replicas]. The information in the attribute is specific to the [Edirectory Replica]. (ie current server)

The [{$pagename}] implies that this attribute is [Not Synchronized] to other members of the [Partition].When not set, changes to the [attribute] are synchronized to other replicas.

In [NDAP], this is equivalent to the DS_PER_REPLICA flag set to True.!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]