Portals (as in the pages starting with Portal:, not to be confused with
www.wikipedia.org which is also sometimes called a portal) are just normal
wikipages using various templates maintained by the wikipedia community.
The only mediawiki specific config is adding Portal to $wgExtraNamespaces.
> The main Wikipedia.org site has many such "portals" and they function
> well. Interested in how a "portal" is structured and set up within a
> MediaWiki site?
> MediaWiki-l mailing list
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> https://lists.wikimedia.org/mailman/listinfo/mediawiki-l >