A todo is an activity that must be carried out.

Possible fields are:

• Todo title - a very short descriptive of the todo Item;
• Completed flag - a flag that describes whether a Todo Item has been done (or not);
• Priority - a multilevel (4) setting to indicate the importantness of the todo Item;
• Due date - a date when the todo should be finished;
• Calendar - a categorisation of the todo Item;
• URL - a URL related to the todo Item;
• Notes - comments related to the todo Item;

Client applications that support Todos are: iCal, ToDo;