@User: In magic, you should use "pc" for poly contact (poly to li), "ndc" for ndiffusion-to-li, "pdc" for pdiffusion-to-li, "nsc" for ntap-to-li, "psc" for ptap-to-li, and "viali" or "licon" for li to metal1. Generally, the best method is to use the device generators to create all your low-level contacts when needed. I really need to update the device generator scripts to include (as an option) contacts up to metal1, as you don't want to be using li as a routing layer.