Uniform Resource LocatorIn other words, a string telling us where we can find something. Related to URL's are URN's, which name things without defining a particular location. URLs are the most common type of URI.[ Insert reference to RFC defining general syntax ]
[ Insert reference to RFCs specifying URL schemes ]
Wub utility for web and more general color manipulation.Latest version may be sourced here  and perused here CMcC is the current custodian, but help and improvement is welcome.