Does a class name, say UIImage+Something or UIImageView+Somethingelse, mean that it acts like a custom UIImage or UIImageView
UIImage+Something
UIImageView+Somethingelse
UIImage
UIImageView
This is a naming convention when using an Objective-C Category to extend the functionality of a class. See the article: http://macdevelopertips.com/objective-c/objective-c-categories.html for a much better explanation.