Ausbausprache, Abstandsprache and Dachsprache#Dachsprache
As an umbrella language refers to a language that is a group of dialects as a common standard language (also see dialect continuum ). Classic examples of roof languages are Italian and German.
The term roof language is also used for literary languages in the strict sense which, although written and read, but rarely used as an everyday vernacular. This could be the case with RG in the future.
In ISO 639-3 different roof or macro languages are recognized, which coexist with their main dialects as languages. Among other things, the Ripuarian and Bairische ( language codes ksh and cash) as the main dialect groups ( languages ) of the (highly) are German standard roof and language ( language code eng) called.