!!! Overview
[{$pagename}] is when an [attributeType] is used for [naming of the entry|Naming Attributes], one and only one value of the attribute is used in forming the [Relative Distinguished Name] ([RDN]). ([RFC 4512])

We have also seen these referred to as [Naming Attributes]

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