1] When we export by way of plot option and then ps2pdf and then into GIMP the image is too small. We need to scale X and Y in the plot option to 1.08.
2] To test boards with three options:
a) latest foggy transparency paper
b) clear OHP film
c) foggy as diffuser and then with clear OHP film
... for SMT, double-sided, new VLF design, spectral boards (inc. TV transmitter)