#421 sub.sym: more description please Issue created by EngGhaith Hi everybody, about the PDK symbol sub.sym in Xschem: Should we tie the sub.sym to GND, or should we use this symbol instead of the Xschem-original gnd.sym? or both are equivalent? Remark: Is there any documentation for the Xschem-symbols and simulation models for Xyce/Ngspice/Qucs-s? Tank you very much. Ghaith. IHP-GmbH/IHP-Open-PDK