*
*
* Note: the class uses only one thread - if you want to use more than one
- * thread use multiple FunctionScheduler objects
+ * thread, either use multiple FunctionScheduler objects, or check out
+ * ThreadedRepeatingFunctionRunner.h for a much simpler contract of
+ * "run each function periodically in its own thread".
*
* start() schedules the functions, while shutdown() terminates further
* scheduling.