1) If you have the latest office 365, when you project your screen to a second monitor/projector, the projector will show the slides and the surface screen will show the current slide, a thumbnail of the next slide, a section for notes off to the right side, and pointer options. In the pointer options, you can set the pen to annotate (highlight or draw in practically any color) or be a laser pointer - it is extremely convenient. The implementation of the presentation mode is very intuitive and requires no special settings, as it automatically happens when you put it into presentation mode. Several people have commented on how amazing this is. After the presentation is over (ppt records the time) it will ask you if you want to save the annotations. I haven't tried saving it as a PDF afterward, but I would assume it would keep the annotations. I'll try it at home and see if it works.
2) Not sure, I haven't tried putting videos in my presentations.
3) Microsoft Miracast Adapter.
https://forums.windowscentral.com/e?...token=7fSb7aC4
This little device plugs into your projector/monitor via hdmi and your screen is projected wirelessly. I would pick one up if it weren't so expensive. But it does sound awesome. The adapter also works with miracast enabled phones (windows or android). Only the surface (or other windows 8 pcs with miracast) will be able to extend your display (i.e. show different content on each screen).
Hope this helps.
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