!!! Overview
[{$pagename}] is defined in [RFC 7231], section 6.5.9: 410 Gone, as a [HTTP Status Code] that indicates the [HTTP Request] that access to the target [resource] is no longer available at the origin [server] and that this condition is likely to be __permanent__.

If you don't know whether this lack is temporary or permanent, a [HTTP 404] status code should be used instead.

[{$pagename}] is [Cacheable|Cache] by default.

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