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@Roy Klein Gebbinck: I have heard of regions, but not of viewports with a 'region technique'. Don't you just mean polygonal viewports? Can you post a dwg?
@Bas Weinans: Hi all, when I make a viewport with the region technique (to cut a hole in my viewport) I get the correct placement on my computer screen. However, when I print it the hole is not visible (I just see the normal drawing). What do I do wrongly?
Not sure I understand... So the goal is to exclude part of your model space object from view? I'm not familiar with using the REGION command in that context, and could not find anything about it in the help dialogs. I do know, as Roy suggested, that you can create polygonal viewports to exclude an area from view.
That said, I turned off your viewport layer, and obtained the following printout. Is that what you wanted?