Conflict lab
The other pages show collaboration working. This one is for disbelieving it: each scenario gives two replicas the same starting point, takes them both offline, makes a specific pair of conflicting edits - the exact cases that break naïve synchronization - and reconnects them, so you can watch what the merge actually does.
Six scenarios
Every scenario states its expectation before you run it. The point is not that something happens, but that the stated thing happens, on both replicas, every time.
Opening two replicas…