Wikipedia:Tip of the day/May 10, 2006
One type of article found on Wikipedia is the topic list. It is a list of links to articles on a particular subject. It is different than categories found in Wikipedia's category system in that categories are usually limited to one level each in a tree, while lists can be an entire tree, with many branches and many levels. This gives the benefit of having all the topics on a given subject in one place - this allows you to scroll down and read the whole tree, and every topic in that tree's subject.
Read more: Wikipedia:Lists (stand-alone lists)