Due dates in todotree

There are always tasks which have a due date that they need to be completed before. In Todotree there are three different keywords:

• due: intended for single use. For example getting married. You can set these using the schedule command or by adding due:year-month-day to a task.
• duy: intended for yearly recurring due dates. An example of this is doing your taxes. You can set these by adding duy:month-day to a task. If the duy date is near the beginning of the year, the date is taking at least one month before. For example, if the task is (B) celebrate new years duy:01-01. Then in December of the year before the due date is already shown in the due command.
• dum: intended for monthly recurring due dates. An example would be to send the invoices. You can set these by adding dum:day to a task. If the dum date is near the beginning of the month, the date is taken at least one week before. For example, if the task is (B) send invoices dum:01. Then the week before that in the previous month it is already showing up in the due command.