Is it possible to provide sync function?

[w2043t]

The web is quite useful. But is it possible to provide "sync" function? Copy and Move functions are not enough for me.

[retifrav]

Oops, somehow I never noticed this request. But anyway, I didn't plan to have sync from the very beginning, as I only needed copy and move (and delete).

I imagine, it would be rather trivial to add sync, but I don't need it and actually I don't want it, as this command is potentially dangerous (a weapon of mass destruction, comparing to move/delete), and I'd like to keep my UI "safe".
Anyone else is free to add it though, but preferably in their own fork.