Layers Dialog — .elx Files / Layer Blending Modes / PCB Blend Modes

§ 19.6.11.2 - PCB Legend

PCB (printed circuit board) Legend layers are transparent where no RGB color component is below 1/2 intensity. The alpha channel is ignored. The Opacity control can adjust the transparency of the layer.

PCB layer modes cannot incorporate positional offsets.

Note: Because the Gerber file CAM files are bi-level, there's no such thing as a partially-on level, no matter what. So when working on printed circuit board layer types, areatool antialiasing does not function, regardless of the actual setting of antialiasing for the particular areatool in use.
See also: PCB Copper
PCB Drill Holes
PCB Solder Mask
PCB Board Profile

PCB Legend layer
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