The Schematic View has been completely rewritten in 3ds Max 6. The following Interfaces have replaced the former SchematicView structure which used to provide methods for opening and controlling the old Schematic View. The structure and its methods are obsolete and not supported in 3ds Max 6 and higher.
These are the new Schematic View-related interfaces in 3ds Max 6:
Provides access to properties and methods of the new Schematic View system.
Provides access to properties and methods of a specific existing Schematic View returned by the .current property and getView() method of the SchematicViews Interface.