OK. I got a new iMac. No operating manual. No guides to the OS. No love. No tenderness. This doesn't surprise me. Apple is a minimalist enterprise. So whenever I upgrade to a new OS, I buy the latest Missing Manual by David Pogue. And I log onto this forum to learn. But what about the latest wireless mouse and keyboard? Both have batteries. Well hidden. And both have power switches. It should be obvious that to save power, it is better to switch off the mouse when you go to bed. And what about the keyboard? If you tap on the end where the batteries are inserted, a cryptic green light above the EJECT key lights up. Then it blinks. Then it blinks some. This goes on for awhile. Does this indicate that the keyboard is searching for a blutooth connection, or is it powering down? Or, is this a message from Steve Jobs dwelling in a different realm? Tell us what to do, please.