Stickies are a cool little application in OSX that allow you place virtual “Sticky Notes” on your screen. They are useful for leaving messages to yourself, or for someone else that will be on the computer later. You can find them in your Applications folder.
The only problem with Stickies is that they can get in the way. You may need to see through them to continue working. No problem.
Simply hit Command-Option-T and your Stickie Notes will become transparent, allowing you to see right through them. Hit the shortcut again, and they become solid.
I actually found the Stickies hard to use until I learned this trick, because I’d always need to get them out of the way to do something else. Now, it’s as easy a keyboard shortcut to see right through!