From Rosetta Code
PropertyThis describes all capabilities which, while not directly provided by a language or its standard library, is still accessible from the language through third-party libraries, or can easily be emulated from within the language. Features which are directly provided by the language or corresponding standard library should use Property:provides instead. For libraries providing a capability, also Property:provides should be used.
This is a semantic property.Properties describe semantic characteristics of Rosetta Code pages, typically determined automatically from other features described in the page such as which templates are used.