MS Power Point
You edit an embedded table object by

All of the listed here
Right clicking the table object, then clicking edit document on the edit menu
Double clicking the table object
Clicking the edit sub command of the document object command on the edit menu

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MS Power Point
How to create additional Guide Lines?

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
by holding Alt key, click on existing Guide Line and drag

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