Creating a Logo / Turtle Graphics Textual DSL using Oslo MGrammar

Jason Hogg has posted a very cool Oslo DSL and an interpretter for doing Logo Turtle Graphics. He had this to say about MGrammar:

I did the bulk of the work specifying the grammar for this simple version of Logo on the flight back from LA to Seattle - which should give you a sense of how intuitive Mg is - and how productive the Intellipad authoring experience is.

Thanks, Jason. We try!