MS Power Point
You can tell when an object is active because

The object is highlighted
A box frame appears surrounding the text
Eight small sizing handles appear surrounding the text
b and c

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MS Power Point
You can show the shortcut menu during the slide show by

Right clicking the current slide
Clicking the shortcut button on the formatting toolbar & Right clicking the current slide
Clicking an icon on the current slide
Clicking the shortcut button on the formatting toolbar

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