MS Power Point
How do you add degrees of transparency to shapes such as arrows, so that the slide background shows though?

Use the Transparency slider in the Format AutoShapes dialog box
Use #D style 4 button on the drawing toolbar
Use the Set Transparent Color button on the Picture toolbar
All of above

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MS Power Point
Using a custom animation effect, how do you make text appear on a slide by letter

All of the listed here
Apply the animation scheme fade in one by one
Apply an entrance effect, and then set it to by letter in the effect option dialog box
Apply the fly in entrance to the text, and then set its speed to very slow

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