Let’s start. The option key right on your keyboard actually can uncover a plethora of hidden little known tricks on Mac OS X. Here are some of the most notable ones. #1. Option-click the Bluetooth icon in the menu bar and get more info. #2. Reveal Wi-Fi information by Option clicking the Wifi icon right in the menu bar. #3. In the menu bar, you can choose a different input and output by Option-clicking the volume icon. #4. You can also turn off notification Center by option-clicking the notifications bar. #5. By option-clicking the Apple icon, you can immediately go to the System Information. #6. Option-click to re-size windows. #7. You can open all subfolders with, you’re right, an Option plus click. #8. Choose to re-size all columns in the Finder with Option-double-clicking on the column selector. #9. Now you can also add the “Save As” option back by option-clicking the File menu. #10. Option-clicking the drop down menu will give you more export options in Preview. #11. You can replace the app in the forefront by an Option-Click on the app you want to be there. #12. Jump to exactly where you want in a document by Option+clicking the scrollbar. #13. You can also force quit any app you pick by option-right-clicking it. #14. Option+click+drag the dock in order to resize in multiple of 16 pixels #15. Option+click the plus sign to immediately add a song to your “Up next” queue in iTunes.