On Wed, Nov 28, 2012 at 8:34 PM, Sumana Harihareswara
> "TemplateSandbox" lets you preview a page with a change in a template it
> At the bottom of the edit form in the Template and Module namespaces, a
> new box will appear that allows you to preview other pages as they would
> appear if you saved the template/module you are currently editing.
> Example: try editing the sample "thank-you" template
. On the edit form,
> under the Save button, you'll see "Preview page with this template" --
> try User_talk:Example_user .
> Or, go to
> and give it the "sandbox prefix" User:Sharihareswara (WMF)/sandbox and
> tell it to "render page" User_talk:Example_user . You'll see the ugly
> changes I made to the template in my sandbox.
> More information at
> You can check this out in the new version of MediaWiki, now live on
, but until we have more feedback and improvements we
> aren't pushing it live on the other sites.
> We figure this will make it easier for people to hack on templates, and
> to develop new Lua templates to replace wikitext templates.
> Sumana Harihareswara
> Engineering Community Manager
> Wikimedia Foundation
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