Improve Scheduler Objects documentation. (GH-4556)
Mention that the lower the priority number, the higher priority it represents.
diff --git a/Doc/library/sched.rst b/Doc/library/sched.rst
index 4d4a616..6094a7b 100644
--- a/Doc/library/sched.rst
+++ b/Doc/library/sched.rst
@@ -69,7 +69,7 @@
Schedule a new event. The *time* argument should be a numeric type compatible
with the return value of the *timefunc* function passed to the constructor.
Events scheduled for the same *time* will be executed in the order of their
- *priority*.
+ *priority*. A lower number represents a higher priority.
Executing the event means executing ``action(*argument, **kwargs)``.
*argument* is a sequence holding the positional arguments for *action*.