There are three ways to change a todo item’s priority:
Raise the current item’s priority by one, exchanging
its position in the list with that of the item directly above
it (todo-raise-item-priority).
Lower the current item’s priority by one, exchanging
its position in the list with that of the item directly below
it (todo-lower-item-priority).
Prompt for a number and relocate the item to the
corresponding position in the list
(todo-set-item-priority). For example, entering
3 at the prompt makes the item the third in the
category, i.e., gives it third highest priority; all lower
priority items are pushed down by one. You can also pass the
desired priority as a numeric prefix argument, e.g., 3
# gives the item third highest priority without
prompting. (Prefix arguments have no effect with r
or l.)