I was curious if there is some way to debug baseLanguage code. For example, I'm having trouble determining what exactly the variables in a referent constraint refer to. I can make some guesses, but being able to step through the code I've created there and to be able to inspect variables during the model transformation would be excellent. That probably isn't trivial. Alternately, is it possible to emit text to a console or to a log file? That might be enough to help me clarify what I'm not clear on. I should note that I turned on the "Save transient models on generation" in the Generation Settings and that in addition to being able to backtrace the transformation of individual nodes is incredibly useful. However, at this point in my understanding of MPS, more tools for debugging editors and their related functionality would be really helpful.