Apple iPod touch iOS 5.1 - Manual (Page 66)

Reminders
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About Reminders
Reminders lets you organize your life—complete with reminders so you don’t miss a due date.
Reminders works with your calendar accounts, so changes you make are updated automatically
on all your iOS devices and computers.
Change views.
Mark as completed.
Add a reminder.
View and edit lists.
Switch between list view and date view: At the top of the screen, tap List or Date.
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