SleepAid 2.1 - covers all aspects of power management on your OS 2.0 Newton. It replaces the default "Sleep" preferences allowing you to set two sleep times - one for battery and one for AC. Users with backlit Newtons can set two separate backlight timeouts. SleepAid also adds a SleepAidNow corner for one tap sleep and a HeapStatus corner for an instant reading of free heap space. SleepAid is not a radical change fromthe existing interface. It adds functionality without complexity and implements sleep the way it should have been in the first place. When SleepAid starts up, it replaces the Newton's default Sleep preferences. You access the new preferences the same way you accessed the old preferences - they appear in the same location on the preferences roll. The new preferences use sliders instead of a popup menu for setting a sleep time for battery power and AC power ("plugged in").