While defining symbols or after defining them, you can add nodes (also referred to as pins) as valid wire attach points on components and connectors. You can also generate, modify, store, and view parameter sets.

If you include a node in a symbol, the system identifies it by placing its name in a note. When you create nodes during symbol definition, it automatically adds the PIN command and node name value to the symbol parameter file. The Detail option node_radius controls the display of nodes in symbols.