Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
No annotations are provided, so the description carries the full burden of behavioral disclosure. It correctly implies a mutating action ('move') and includes the unit 'mil', but does not disclose whether a document must be open, whether the change is reversible, what happens on an invalid designator, or what the tool returns.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.