One of the new features in OS X Mavericks is a slight change to the way the power button on your Mac is used. While pressing the button on a powered-down system will start it up as expected, with OS X running, instead of bringing up the power menu as it did in the past, the behavior now has three different modes.

The first mode is to sleep your Mac, where you press the button for about a second and then release it. Continue reading →