Timing Services
You can schedule routines to execute at a later time using the
method of performing time-related tasks.
You can schedule routines to run periodically or after a specified delay. Time
delays can be specified in milliseconds or microseconds in System 7.0. You can
achieve a maximum resolution of 20 microseconds. This gives you greater
accuracy in coordinating sound, multimedia, and other events that require
precise timing.
See the Time Manager for information on how to schedule a routine for later execution and how to compute elapsed time.