>So, even though the IDE does not have that on little step (visual creation a new sublass, which is indeed an obvious omission), you can very simply create a new sublass in code with 1 line of code, then use the Class Diagram to work on it form then on, and go to the code also, any time you want. See screen shot for all the things you can do to a class definition from the visual tool.

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>public void NewHolePattern : HolePatternBase { }
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>And it is indeed either way: code or visual. Two way - Either way you like. Any time you like.

Under "two way", I meant that if you have set properties in code, and then they are set visually, the code changes. Also, if code changes, the visual aspect changes immediately. At least that's how it worked in Delphi a dozen years ago. But then my memory of it is a bit fuzzy - it was code but it could have been just a special PEM-sheet like section of the code.