MS Power Point
After moving a clip art image to a particular location on the slide, you can immediately reverse the action using the

All of the listed here
Click the not do move object command on the edit menu
Click on redo button
Click on the undo button

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MS Power Point
How to create additional Guide Lines?

by holding Alt key, click on existing Guide Line and drag
by holding Ctrl + Alt key, click on existing Guide Line and drag
by holding Ctrl key, click on existing Guide Line and drag
Additional Guide Lines cannot be created

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