ClassDef definintion flag bitmask. Derived from Mask.

• Mask

 Object exists only in development environment.

 Object is a system object.

 Object is a multinode object.

 Object contains ObjXRefs.

 Object has a runtime body.

 Object contains AttrXRefs.

 Object contains ObjRefs.

 Object contains AttrRefs.

 Object can be a top level object.

 Object can not have children.

 Object is a template object.

 Object is an IO object.

 Object is IO agent.

 Object is IO rack.

 Object is IO card.

 Object has callbacks.

 Object is readonly in runtime.

 Class is internal, ie only used as superclass or attribute objects.
 It will not be displayed in palettes.

 Class is a plc function object.

 Class is obsolete.