Palm Treo 300 - Manual (Page 170)

Section 6
162 Application-Specific Tasks
3. Hold Option and press Return to finish.
To Do List menus
To Do List menus are shown here for your reference, and To Do List
features that are not explained elsewhere in this guide are described here.
See page 28 for information about choosing menu commands.
Record menu
Options menu
Record
Completion
Date Replaces the due date with the actual date when you complete
(check) the item. If you do not assign a due date to an item, the
completion date still records when you complete the item.
Show Due
Dates Displays the due dates associated with To Do items and displays an
exclamation mark next to items that remain incomplete after the
due date passes.
Show
Priorities Shows the priority setting for each item.
Show
Categories Shows the category for each item.
About To Do List Shows version information for To Do List.