from http://c2.com/cgi/wiki?WikiWord and other pages at that site.

"A WikiWord is a WikiCase "word" which identifies and links WikiPages. It is a concatenation of two or more words composed of at least two letters each, without intervening white spaces, where the first letter of each component word is capitalized and the remaining letters are lower cased; initial letters capitalized and words run together (e.g., CapitalizationRules), but each capital letter must be followed by a lower case letter (hence one-letter words are not accommodated). Often referred to as CamelCase."