!!! Overview
[{$pagename}] is described in [RFC 7232] is a method including [metadata] [HTTP Header Field] fields for indicating state changes, request header fields for making preconditions on such [state], and rules for constructing the responses to a conditional request when one or more preconditions evaluate to false.

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