The Alt+Enter shortcut isn't limited to new formulas you write—you can go back and clean up any messy formulas at any time.

Mark Gurarie is a writer covering health topics, technology, music, books, and culture. He also teaches health science and research writing at George Washington University's School of Medical and ...

The combination of ALT + F4 is useful for shutting down applications and systems. It is one of the most-used keyboard shortcuts. However, many users report that the combination doesn’t work. If you ...