The Class object type can be arranged in a hierarchy using an OMT Dynamic model to document transitions within this class.

The Class object type can be arranged in a hierarchy using an OMT Class description model to allocate attributes and operations to this class. The possible relationships in this model represent a subset of the OMT Object model.

The State, Final state, and Initial state object types can be refined in an OMT Dynamic model to enable state descriptions at various hierarchy levels.

The Process object type can be refined in an OMT Functional model to enable data flow descriptions at various hierarchy levels.

The Data store object type can be arranged in a hierarchy using an OMT Object model.

The connection types of the OMT Functional model can be illustrated more precisely by means of an OMT Object model or an OMT Data value decomposition model to document the details of a data flow.