Definition of a class. The object is the root of an
 object tree that defines bodies and attributes in a class.

 Editor to call on an "Open" command.

 Method used by the called editor.

 Bitmask for class properties

 DevOnly      object exists only in development environment
 System	      object is a system object
 Multinode    object is a multinode object
 ObjXRef      object contains ObjXRefs
 RtBody	      object has a body in runtime
 AttrXRef     object contains AttrXRefs
 ObjRef	      object contains ObjRefs
 AttrRef      object contains AttrRefs
 TopObject    object can be top object
 NoAdopt      object can not have children
 Template     object is a template object
 IO           object is an IO object
 IOAgent      object is an IO agent object
 IORack	      object is an IO rack object
 IOCard       object is an IO card object
 RtReadOnly   object is readonly in runtime
 Internal     class is internal and not displayed in palettes

 What kind of mmi picture dispacher to user

 LongWord size alignment