ProcessorScheduler methods
These messages are sent to the Processor global variable. 
The following instance methods pertain to ProcessScheduler: 
activePriority 
Answers the priority of the current active process in the system. 
activeProcess 
Answers the current active process in the system. 
highIOPriority 
Answers the priority of the process monitoring the local network devices. 
lowIOPriority 
Answers the usual priority for input/output processes. 
signal:atTime: 
Informs the system that it should signal a semaphore at the resumption time, specified in milliseconds since midnight. 
systemBackgroundPriority 
Answers the priority of a system background process. 
timingPriority 
Answers the priority of the process monitoring the real-time clock. 
userBackgroundPriority 
Answers the priority of a user background process. 
userInterruptPriority 
Answers the priority of any process forked by the user interface that should be run immediately. 
userSchedulingPriority 
Answers the priority of the user interface process; also the default priority for any process forked by the user interface process. 
Last modified date: 01/29/2015