System classes are object definitions that OpenROAD provides. By using OpenROAD system classes and their associated attributes and methods, you can manipulate OpenROAD application components from your scripts and procedures.

The system classes include all OpenROAD Workbench application components, such as frames, forms, menus, field menus, and menu items. In addition, OpenROAD provides system classes that are used for classification only (known as “abstract” or “abstraction” classes in object-oriented programming), such as Object and FieldObject.