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rationale Rationale
Identifies why this milestone exists, what problem it is solving, and/or what object
cannot be modeled using the regular hierarchy.
Usage/Remarks
Best Practice
Although not required by the Tag Set, this should be treated as a required attribute
and a value always provided when milestones are used.
OPTIONAL on elements: <milestone-end>, <milestone-start>
| Value | Meaning |
|---|---|
| Text, numbers, or special characters | The reason for a milestone, or information about an object that cannot be modeled using the regular hierarchy. |
| Restriction | @rationale is an optional attribute; there is no default. |