You only get the two options if you have activated AutoOn/Off.
'Turn Off' means Off until the next Auto-On (it will remind you when you turn off)
'Fully Off' means Off, and stay off until you hit the power button.
Off in this context means shut down the equipment but keep the OS loaded, more like the Standby or Hibernate mode on a regular PC. Really, really Off would give you the full reboot like you see with a battery pull.
Thanks for that explanation! But ya know this is why I love my Berry because even when I still need my alarm, it wakes right back up! Even when I put the phone on Quiet! Those RIM people are genuises!
Posted from my CrackBerry at wapforums.crackberry.com
If you set an alarm for a specific time - that will be the time for next 'turn on', if you did not set up turn on timing in the options separately. imho