Alexander Pann

IMO, I've addressed all points.

@arimer I've rebased the PR for 2021.3. It could be merged.

@mgronover can maybe comment on the ticket since he worked on the tracer tool.

Just a small remark: The language `com.mbeddr.mpsutil.multilingual` was scheduled for removal before in case anyone wants to use it. Before you i18n this project, you would have to start with...

> I would also argue that we should not use a "[node as Type cast](http://127.0.0.1:63320/node?ref=r%3A3b5d2a4d-f539-4854-bc25-c43da4b5202c%28org.iets3.core.expr.lambda.typesystem%29%2F2619776616563037887)" but a `node:Type` cast. The `node:Type` is a source of many of our type system...

@arimer We probably have to check all those instances and check that we don't fail silently. Maybe some null checks or additional type system checks are necessary. For most cases,...

If we are talking about flow-based programming, I've created a small demo before that's not related to KernelF that could be used for inspiration:

Please correct me if I am wrong, but structural coverage e.g. [here](http://127.0.0.1:63320/node?ref=r%3Acedcefeb-b6c3-4a59-9eee-d6b03a99e30f%28test.in.expr.os.coverage%40tests%29%2F4372229961988419336) checks that the structure of nodes (properties, children, references) is referenced in the tests suits (or outside). In...

There are quite a few different tooltips. Which one to you mean? Can you make a screenshot?

The functional call just asks for the parent node (EnumDeclaration). So I could add this statement to the start of the inference rule: addDependency(el.parent); Before I add such as statement,...