> Which layer is the component layer?
The group that includes the 'c' layer.
Don't confuse drawing layers with copper layers. In the "1,2,c" case
you have two drawing layers (1 and 2) plus a "tag" (c) that says that
group represents the component-side copper layer. *Groups* map to
physical layers, not the numbered drawing layers.
> Which layer is the solder layer?
The group that includes the 's' layer.
> What seems to be the "default" values is (see pcb_groups_default.jpg)
> Groups("1,c:2,s:3:4:5:6:7:8")
>
> 8 layer board with 1 as component surface, 2 as solder surface and
> 3,4,5,6,7,8 as internal layers.
Yes.
> Groups("1,c:2:3:4:5:6:7:8,s")
>
> Are the colons breaks between layers and the 1,c saying first layer is
> the component layer. The 8,s the eighth layer the solder layer?
Yes.
> going back to the code example Groups("1,2,c:3:4:5,6,s:7,8")
>
> is this read as layers 1 and 2 are both component surface?
>
> 5 and 6 are both the solder surface?
Yes. Drawing layers 1 and 2 are grouped into a single copper layer,
which is the component side layer. Likewise for 5+6 as solder.
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