!!! Overview
[{$pagename}] is a [HTTP Header Field] used within a [HTTP Request]


Not all [HTTP Header Fields] appearing in a [HTTP Request] are [{$pagename}]. 

For example, the [Content-Length] [HTTP Header Fields] is an [HTTP Entity Header] referring to the size of the body of the [HTTP Request] [message]. However, these entity requests are usually called Request headers in such a [context].

* [DNT]
* [Origin|Web Origin]

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