On Fri, 20 Sep 2013 19:22:05 +0200, Quim Gil qgil@wikimedia.org wrote:
"Preview page with this template" at the end of the template edit page where you can introduce the title of the page and see how the template will behave there.
For the record, this is part of the TemplateSandbox extension: https://www.mediawiki.org/wiki/Extension:TemplateSandbox . (It is deployed on all Wikimedia wikis.)