| Name | Kind | Description |
| weeks_allowed | attribute | True if weeks are allowed in the constrained Duration. |
| wf_definition | attribute | Optional workflow engine executable expression of the Instruction. |
| wf_details | attribute | Various workflow engine state details, potentially including such things as: * condition that fired to cause this Action to be done (with actual variables substituted); * list of notifications which actually occurred (with all variables substituted); * other workflow engine state. This specification does not currently define the actual structure or semantics of this field. |
| width | attribute | Length of the interval during which the state was true. Void if an instantaneous event. |
| workflow | package | |
| workflow_id | attribute | Identifier of externally held workflow engine data for this workflow execution, for this subject of care. |