#svSelectionSetChanged: integer Sent when the Schematic View selection set has changed. callbacks.notificationParam() returns the Schematic View index.
#svDoubleClickGraphNode: undefined Sent when the user double-clicked a Schematic View node.
#svPreLayoutChange: integer Sent before Schematic View applies its layout algorithm.
Calling callbacks.notificationParam() within the callback function returns the Schematic View index.
#svPostLayoutChange: integer Sent after Schematic View applies its layout algorithm.
Calling callbacks.notificationParam() within the callback function returns the Schematic View index.