It seems that people use it to help audience focus. You would black the screen between slides. Probably you could emulate it by including blank slides in-betwee

It seems that people use it to help audience focus. You would black the screen between slides. Probably you could emulate it by including blank slides in-between. There is of course other opinion, that it can be more distracting, but it depends on material and speaker: http://www.mrmediatraining.com/2011/03/29/powerpoint-why-you-shouldnt-use-the-b-key/ http://www.mrmediatraining.com/2011/03/29/powerpoint-why-you...