On Land

Environment Information
At Rill Architects we run ArchiCAD on macOS. If you work at Rill, this is your stuff. If you don't, but you work in ArchiCAD, you may find something interesting. Anybody else, I don't know.
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For two strings with the same orientation, select one, then Cmd+click on the other. The second string will disappear, and its points will be added to the selected string.