[Mediawiki-l] What is &article=foo for?

[gangleri]

Hallo!

At the end of http://test.leuksman.com/view/FiverAlpha:Bugzilla/03922 you 
see "Categories" and the list of categories.

Why is &article=FiverAlpha%3ABugzilla%2F03922 appended ?
The generated link is
http://test.leuksman.com/index.php?title=Special:Categories&article=FiverAlpha%3ABugzilla%2F03922

best regards reinhardt [[user:gangleri]]
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