I see there are 3 types of solid region, solid npth and cutout. The tutorial describes its use with the attribute solid, as a small copper area to connect pads. What are the other two uses, cutout and npth? Thanks
Cutout creates a copper free area.
NPTH create a hole in the PCB with no copper plating around the inner edges of the hole.
NPTH = Non-Plated-Through Hole
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