I want to build a feature called "Surround with Region". It's available in Visual Studio. Have a look here
Recently I've seen this feature with MPS intentions
Then I want to port the region feature from Visual Studio to my MPS DSL.
I had a look on the sample Kaja. There is an intention called Extract Routine defined. But you can only mark one DSL argument and not multiple.
Have a look at the underlying image.
Can someone tell me how to achieve that?