CamelCase
CamelCase is the term identifying the ability to link to another page on a wiki by removing the space between two capitalized letters. It was a revolutionary way of thinking of technology—"What is the simplest thing we can do to make this work?"—to paraphrase WardCunningham. The MediaWiki wiki engine was developed from UseModWiki and because it was developed for an encyclopedia, where proper spelling and spacing are of high importance, the use of CamelCase to create internal links was phased out.
Likewise, WikiIndex (which runs on MediaWiki) does not use CamelCase to create links. Instead, one must enclose the wanted link in double brackets: [[]].
However, there is some sentiment (and practice) that CamelCase should be used on WikiIndex when creating categories which contain two or more words, such as Category:LoginToEdit.