This is a leftover link. When I started writing docs originally, this was planned to be a tutorial on the how and why of time syncing. However, I deemed the original version of most of the docs too verbose and dwelling too much on history. Granted, the history of how things evolved is always interesting, but a networking addon's tutorial page is not the best place for it imo :)

If you're interested, here's the original version of the doc from an earlier commit:
b5ccce7

Created #186 for this.

Thank you for the explanation, and especially the link. I am happy to see all of it is intact, though I would argue the old version's "Time"

"Regular" time combines the best of both worlds - it is based on an estimate of
the host's time, but doesn't jump around. It is synced to the host once, and
then only ever updated in case the clocks go extremely out of sync for whatever
reason.

Use this as your go-to solution, and specifically when you need to share
timestamps between clients - for example sending a message saying Player C
fired their gun at tick 357

is crystal clear compared to current one. As for the rest, I would argue current network-time is better than that old documentation page