So another high frequency application was this geometric figure I couldn't
make in Eagle.
It was supposed to be a 60 degree slice of a circle 15mm radius and 10mm
thick.
So 20mm in diameter empty space in the middle of a 40mm filled circle then
a 60 degree slice of that... Like if you'd cut a slice of a donut.
I gave up after about 30 minutes and the best I managed to do was that
figure but ending with round edges. So I asked the guy at the Genesis CAD
software and he fixed it by masking a negative image upon that cirle just
by putting two straight lines from the middle 60 degrees apart and then
just kept the area between these - took two minutes.
So if I wanted to do that in Eagle, could it be done? Are there any known
plans of introducing negative images on the top and bottom layer?
I guess this is one of the reasons I used Paint or other paint software to
make PCBs images back in the day. You could do anything you wanted quick
and easy. 
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