For a <Task>, <Duration> is the total span of active working time.
For a task's <Baseline>, it is the scheduled duration of the task when the baseline was saved.
| Property | Value | 
|---|---|
| Data Type | TimeSpan | 
| Minimum Occurrences | 0 | 
| Maximum Occurrences | 1 | 
| Default Value | N/A | 
| Abstract | False | 
| Nillable | False | 
| Element Constraints | N/A |