I have the Pro version of EAGLE, both v4.16r2 and v5.3.0. Lately I've
been working on 2 layers boards (layers 1 and 16), but the display
list of layers always includes layers 2 - 15. When I manually route a
trace, layers 2 - 15 are also displayed, so I have to ignore the extra
layers in the list. In DRC/Layers, I have (1*16), so why do I see
these superfluous layers? EAGLE won't let me delete internal layers,
so what do I do?
-Dave Pollum