A task deadline may be set, changed and deleted again using
Change
Deadline
or File
Change
Deadline
in the task view. When filling in the deadline date fields, use YYYY-MM-DD date
format. Entering a void date field deletes the deadline if present. Changing the
task deadline is possible unless the task has reached a final status
(accepted or cancelled). When the deadline has passed and the task
has not been finished, the deadline is displayed in red in the task view.