If you use Org mode extensively, you may end up with enough TODO items that it starts to make sense to prioritize them. Prioritizing can be done by placing a priority cookie into the headline of a TODO item right after the TODO keyword, like this:
*** TODO [#A] Write letter to Sam Fortune
By default, Org mode supports three priorities: ‘A’, ‘B’, and ‘C’.
‘A’ is the highest priority. An entry without a cookie is treated as
if it had priority ‘B’. Priorities make a difference only
for sorting in the agenda (see Weekly/daily agenda). Outside the
agenda, they have no inherent meaning to Org mode. The cookies are
displayed with the face defined by the variable org-priority-faces,
which can be customized.
You can also use numeric values for priorities, such as
*** TODO [#1] Write letter to Sam Fortune
When using numeric priorities, you need to set org-priority-highest,
org-priority-lowest and org-priority-default to integers, which
must all be a non-negative integer between 0 and 64, inclusive.
Priorities can be attached to any heading; they do not need to be TODO items.
org-priority) ¶Set the priority of the current headline. The command prompts for a priority character ‘A’, ‘B’ or ‘C’. When you press SPC instead, the priority cookie, if one is set, is removed from the headline. The priorities can also be changed “remotely” from the agenda buffer with the , command (see Commands in the Agenda Buffer).
org-priority-up) ¶org-priority-down)Increase/decrease the priority of the current headline47. Note that these keys are also used to modify timestamps (see Creating Timestamps). See also Packages that conflict with Org mode for a discussion of the interaction with shift-selection.
You can change the range of allowed priorities by setting the
variables org-priority-highest, org-priority-lowest, and
org-priority-default. Valid priority values are single uppercase
Latin alphabetical characters A-Z, and non-negative integers in between 0
and 64, inclusive. For an individual buffer, you may set these values
(highest, lowest, default) like this (please make sure that the
highest priority is earlier in the alphabet than the lowest priority):
#+PRIORITIES: A C B
Or, using numeric values:
#+PRIORITIES: 1 10 5