Sorry to keep pestering the board with silly questions, but I have yet another one. 
Specifically, I’m trying to wrap my head around how the probability modifier applies to the various parameters. Trigger, I think, I get: Probability defines the % chance that a trigger is sent out. Pretty straightforward. But what does this now mean for the note, octave, and duration parameters?
Is it, for instance, the % chance that the note setting actually takes effect instead of just playing the root note? Etc. etc.