MS Power Point
To add a Header/Footer in Handout

View -> Page Setup
None of Above
View -> Header/Footer
View -> Handout Master

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MS Power Point
To give a PowerPoint presentation to a large audience, you:

Click the slide you wish the audience to see in normal view, then click the next slide, and so on
Choose either view, slide show or slide show, view show
Slick slide show, OK
Set up your computer in a large auditorium, and click large, auditorium, OK

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