Maximal Starting Repertoire(MSR)
- Code points that are eligible for use in labels for top-level domains.
- A default set of Whole Label Evaluation Rules for the root zone.
The MSR is updated from time to time based on feedback from the community and to accommodate relevant updates to the Unicode Standard. Each new version of the MSR is given a version number in the form MSR-# (e.g., MSR-1, MSR-2, MSR-3).