Clock diagnostics

Related guidance: how-to/check-clock, how-to/troubleshooting.

Runnable examples: check_clock.py.

Symbol	Summary
Clock	Measure the configured ECN’s time relative to the local process clock.
ClockReport	Summary of one bounded ECN-relative clock measurement.
ClockEndpoint	Configured ECN-relative NTP endpoint used for one measurement.
ClockLeapState	NTP leap indicator reported by the selected server response.