Wikipedia:Tip of the day/March 1

How to plant a CategoryTree!

Trees in religion Sacred groves Trees in Buddhism Trees in Christianity Four species (Sukkot) Trees in Germanic paganism Sacred trees in Hinduism Trees in Islam Trees in Shinto

The CategoryTree is a MediaWiki extension that provides a dynamic view: you can change how much you see of a category's structure as a tree. You can use it to show a category and its subcategories by putting the category name between category tree tags like this:
<categorytree> Trees in religion </categorytree>

The result is a category tree like the one shown to the right. Click on the triangles to expand and collapse the tree.

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Read more:
MediaWiki:Extension:CategoryTree