# C310 author review

Question: What is the smallest retained context cover of the supported LXX600-segment field, and what does the batch establish?

Conclusion: The seven-index LXX600-segment cover uniquely requires MTbaseline plusSPalternate contexts and a role change; one annual index remains missing. The batch closes with source-qualified529 structure and explicit limits.

The exact results were inspected against the source register and independently expressed domain identities in the checker. The second run verifies deterministic reproduction, not independent scientific review. No new agent review is claimed.

Limits:

- A minimum set cover is a mathematical property, not a historical selection rule.
- The regular context family keeps Gear and rail labels on each segment.
- Absolute placement, historical intention, statistical rarity and a globalz-law are not established.
- The authorized batch ends atC310; C311 is unexecuted.

The report and checkpoint are authored interpretations. The verifier authenticates the supplied inputs and calculations; it does not prove historical intentionality. Original dependencies and all standing controls remain unchanged.