# measure-instrumentation-spec - Version History

| Version | Date | Release | Effort | Type | Summary |
|---------|------|---------|--------|------|---------|
| 2.1.0 | 2026-06-10 | v2.26.0 | F-12-batch-4 | minor | Quality convergence: When NOT to Use + output-contract enumeration (F-12 Batch 4) |
| 2.0.0 | 2026-01-26 | - | - | baseline | Prior published version |

## 2.1.0 (2026-06-10)

Quality-convergence minor (F-12 Batch 4): added a "When NOT to Use" section with boundary pointers to neighboring skills, and the Output Format now enumerates the template sections a complete artifact fills. No template or example changes.

## 2.0.0 (2026-01-26)

Baseline row for the prior published version; see git history for its changes.
