Rose is a homemade coding/scripting language for creating turtle graphics on Amiga 500 / Amiga 1200. The language was created by my friend Aske (Blueberry if you're into the Demoscene) - not surprisingly, since he works on the Dart programming language in his day job at Google.
Above: example of a Rose Amiga 500 64kb intro by H0ffman, Blueberry and myself