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 Short cut: when placing many similar parts like diodes, place all of one direction then hit space bar it will rotate part. then place remainder in the other directions. spacebar is quick and easy way.
Tip: Remember you can print out negative film for both pos/neg board methods.
Application note: Shielding and Guarding PC board. download
Application note: Grounding # 1 download
Application note: Grounding # 2 download
Application note: Decoupling and Grounding download
Application note: RF Prototyping techniques download
Application note: Noise in op-amps download