!!! Overview
A [{$pagename}] is a [schema] element that can be used to determine which [attributeType] can be used in conjunction with a given [matchingRule].  

%%information
Note that this only applies when using [extensible match filters|extensibleMatch].
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A [{$pagename}] definition includes an [OID] for the [matchingRule] that it applies to and a list of the names or [OID]s of the attribute types that may be used in conjunction with that [matchingRule].  If an attribute is not included in this list, then it cannot be used in conjunction with the associated [matchingRule].  If there is no [{$pagename}] defined for a given [matchingRule], then it should be assumed that the [matchingRule] can be used with any attribute type.

The set of [{$pagename}]s defined in the server may be determined by retrieving the [matchingRuleUse] attribute of the [SubschemaSubentry].  

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