Run code when new page is created in MediaWiki

I want every page on my wiki to end with a <comments /> tag. How do I automati开发者_开发百科cally add this tag to the end of every page?

NOTE: comments tag comes from ArticleComments extension.

Do I have to write my own extension? How do I go about this?

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You could take a look at something like the Preloader extension or the MultiBoilerplate extension at the mediawiki home page see if it matches what you need