Could someone explain this concept of syncing between SP3 and another laptop? I saw a video on youtube where a person was working on his SP3 and that screen was displayed at the same time on another laptop screen. It wasn't just screen sharing because the person could also edit stuff on his laptop and then any changes he made on there would also show on his SP3. The reason I'm asking this is because often times I type stuff on my macbook using preview annotation and I want to link this to my SP3 so I can also draw stuff on preview as well. Do I need some sort of program to be able to do this?