Hey,

> I need to detect when a categorization is made on an article.
> ...
> There's another way to add/remove an article from a category ?

These are two very different things. Both do not seem very SMW related though (categories are a MediaWiki feature), so it might be better to ask this on wikitech-l: wikitech-l@lists.wikimedia.org

Cheers

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Jeroen De Dauw
http://www.bn2vs.com
Don't panic. Don't be evil.
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