Good for setting default values or loading server objects.
| func | 
 Use environment variable syntax (e.g.,   | 
| pattern | 
 An event pattern (such as Pbind).  | 
| cleanupFunc | 
 Optional. A function to evaluate when the pattern is stopped, or when the supplied pattern runs out of values. For example, if you loaded a Buffer in the initializer function, you could free it in the   | 
Pfset does not override values placed into the event by the inner pattern:
Sound example