A new MetaClass has to be created as a derivative (child) from another class (parent). This can easily be done in the Class Browser control by
- Navigate to the favoured parent MetaClass in the Class Browser
- Create a new child MetaClass with Derive new object from the context menu
- Edit name and description, either
- in the Class Browser
- by opening and connecting the new MetaClass to the Object Editor control
- Save the object with Ctrl+S
Technical background
The system creates a new instance of CUSTOMMETACLASS and sets the Inherit property with the parent MetaClass. A custom MetaClass is consequently also an instance of CUSTOMMETACLASS and can be treated as a Content Object.