| Name | Kind | Description |
| default_value | attribute | |
| defaultValue | operation | return the default value |
| defaultValue | operation | returns the default attribute value, may be an empty string |
| defaultValue | operation | returns the default actual value |
| defaultValue | operation | returns the default relation value, may be an empty string |
| DefaultVisibility | attribute | |
| defined_ | operation | internal, do NOT use it |
| deleteEffect | attribute | |
| description | operation | returns the description |
| Diagrams | class view | Some diagrams describing the API classes organisation |
| Diagrams classes inheritance diagram | class diagram | |
| dir | relation | |
| direction | operation | return the direction |
| do_activity | attribute | |
| doActivity | operation | return the activity in OCL |