Flag Item ========= Toggle an appointment's 'important' flag or a todo's 'completed' flag. If a todo is flagged as completed, its priority number will be replaced by an 'X' sign. Completed tasks will no longer appear in exported data or when using the '-t' command line flag (unless specifying '0' as the priority number, in which case only completed tasks will be shown). If an appointment is flagged as important, an exclamation mark appears in front of it, and you will be warned if time gets close to the appointment start time. To customize the way one gets notified, the configuration submenu lets you choose the command launched to warn user of an upcoming appointment, and how long before it he gets notified.