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Recently I started using KLayout with much help from the tutorial at Washington Nanofabrication Facility. This software seems very powerful, but unfortunately I am not.
Ideally I would like to make an instance that is an array of polygons, then center that instance in a larger square and subsequently subtract the instanced array from the square. However I have not been able to do this. It is possible to subtract the centered array instance after doing Flatten Instances, but then subsequent edits of the polygons don't propagate to the centered array. Does anyone understand what I am missing? Is there a way to do what I want? It would make my mask designs very easy to adapt.
Probably this is the perfect example for a macro, but I am not in possession of sufficient faculties...