Editing Template:Mediawiki

{{ #ifeq:
  {{SERVERNAME}}
| www.mediawiki.org
| [[{{{1}}}|{{{2|{{{1}}}}}}]]
| [http://www.mediawiki.org/wiki/{{urlencode:{{{1}}}}} {{{2|{{{1}}}}}}]
}}<noinclude>
----
This template links to a page on  from the [[Help:Contents|Help pages]]. The template has two parameters:
# Pagename, optionally preceded by an interwiki link prefix valid on mediawiki.org
# (optional) Link description

{{ #ifeq:
{{SERVERNAME}}
| www.mediawiki.org
| This is so that the public domain help pages - which can be freely copied and included in other sites - have correct links to Mediawiki:
* on external sites, it creates an external link
* on Mediawiki, it creates an internal or interwiki link

'''All''' links from the Help namespace to other parts of the mediawiki.org wiki should use this template.}}

Demo of interwiki link:

<nowiki>
{{mediawiki|m:Help:Calculation|Help:Calculation}}</nowiki> gives either <nowiki>[[m:Help:Calculation|Help:Calculation]] or [http://www.mediawiki.org/wiki/m%3AHelp%3ACalculation Help:Calculation]</nowiki>, rendered as [[m:Help:Calculation|Help:Calculation]] or [http://www.mediawiki.org/wiki/m%3AHelp%3ACalculation Help:Calculation], respectively. 

</noinclude>