MS Power Point
When using PowerPoint, to play a PowerPoint show for previewing the show, select

View outline
View, slide show
View, slide
View, slide sorter

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MS Power Point
To maintain the perspective (height and width ratio) of an object when resizing, you need to

Press and hold the alt + ctrl keys while dragging a middle handle
Drag a corner sizing handle
Press and hold the shift key while dragging a corner sizing handle
Press and hold the shift key while dragging a corner sizing handle & Drag a corner sizing handle

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