To add a new line inside of a cell type Alt-Enter for Excel on PC, Option-Command-Enter for Excel on Mac, Ctrl-Enter for Google Docs on Mac.

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In general on the Mac, you can zoom in on any screen that's hard to see by pressing Command and Option and the equal sign key simultaneously.

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Indeed, my preferred option -- a more active and well-regulated role for NSA and Cyber Command on and for American networks -- is almost a third rail in the debate over U.S. cybersecurity.

CNN: Have the courage to deal with cyber war