!!! Overview
[{$pagename}] ([NUL]) may be different depending on the [context].

Generally a [{$pagename}] implies no value which [MAY] __NOT__ be the same a an empty value.

Try [Null|Wikipedia:null|target='_blank'] for more information.

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