!!! Overview
[{$pagename}] or (i-num) is a [Unique Identifier] within the current [Context].

[{$pagename}] is a method to use [Best Practices For Unique Identifiers].

!! [{$pagename}] [XRI]
[{$pagename}]s are machine readable identifiers (similar to [IP Addresses|IP Address]) that are assigned to a [resource] (for instance, a person, organization, application or file) and never reassigned. This means an [{$pagename}] can always be used to address a network representation of the [resource] as long it remains available anywhere on the network. I-numbers, like IP addresses, are designed to be efficient for network routers to process and resolve.

[{$pagename}] are a form of an [XRI] resolution protocol can be used to resolve either an [i-name] or an [{$pagename}] to an [XRDS] document describing the target [resource].



!! [Internet]
[{$pagename}] may be a persistent number registered to people, organizations and objects in the [Extensible Resource Identifier] system for consistent naming across the [Internet].

[{$pagename}] is often used to solve the problem of how any [web] [resource] can have a persistent [Identifier] that never changes even when the web resource moves or changes its human-friendly name. 

For [example], if a web page has an [{$pagename}], and links to that page use the i-number, then those links will not break even if the page is renamed, the website containing the page is completely reorganized, or the page is moved to another [website].

!! [LDAP]
Many [LDAP] implementations are designed using a [{$pagename}] or a [UUID] for naming the [LDAP Entries|LDAP Entry] within the [LDAP] server [Context]. Using the [Best Practices For Unique Identifiers] 

!! [Linux] and [UNIX]
[{$pagename}] may be an index entry within a [File System] that uses [inode]

!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]
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* [#1] - [https://en.wikipedia.org/wiki/I-name|Wikipedia:https://en.wikipedia.org/wiki/I-name|target='_blank'] - based on information obtained 2017-07-16-