Hi, My first mac was a MB, and I just added a 27" iMac to my collection. However I'm addicted to the gestures on the MB trackpad. Maybe this is a silly question, but my searching has failed to come up with an answer. Are there keyboard equivalents to the up/down/side swipe gestures? I get frustrated trying to get access to a clear desktop or list the open apps...the only equivalent I have is the F3 key. If anybody knows, please help!