One question...

Theme: Rectangle, filled rectangle, image, inscribed rectangle

I need a rectangular hole in a ground plane. How do I do this?
Behind a WLAN antenna, a rectangular area must be free of copper in a signal polygon (ground plane). How can I make this work?

Please draw a filled rectangle in
to the corresponding deletion layer, e.g. layer 1 or 15 and let the signal polygons recalculate with the [>] key.