Did you know that MPS 3.0 introduced a Console tool window, in which you can instantly type and execute DSL code? Many of the actions that you would normally invoke by navigating through the menus or by manually opening and editing nodes can be automated through the console.
We’ve just wrote up a short documentation listing the console capabilities and intended usages. Check out the MPS console documentation and try it for yourself.
Develop with pleasure!
-JetBrains MPS Team