A Web app showing Einstein-Poincaré Synchronization procedure

Hi !
I've written a Web app to show Einstein-Poincaré Synchronization
procedure in action :
https://www.noedge.net/e/
[TODO: synch B on A and more documentation]
The procedure can be fully executed by :
- start the whole simulation
- set clocks randomly as wanted
- click on "A synch B"
(notice that only "local" clock values are taken into account)
- check the result (likely : non synched!)
- apply offset on A or B
- click again on "A synch B"
Comments welcomed!