Board Thread:Support Requests - Getting Technical/@comment-65.94.76.126-20130528075350/@comment-452-20130529150416

Even though there's no built-in way to add extra namespaces attached to all pages, I've noticed that brickipedia has come up with a novel solution.

Picking what is currently their most recently edited article: Notice how on the left side, they've added some tabs, the first "encyclopedia" is the main page, with a second tab labelled "inventory", which links to Inventory:Jack_Sparrow
 * http://lego.wikia.com/wiki/Jack_Sparrow

Some pages have a 3rd tab "Reviews": http://lego.wikia.com/wiki/Review:4432_Garbage_Truck

You'll have to check their CSS and JS to see exactly how they've done it, but they've proved that it's certainly possible to add custom namespaces to all pages.