notes.txt : Added note on cross fade parameter order and timing.

doc/notes.txt

@@ -60,6 +60,19 @@ LA Secs  - Fragment recd/play unit look-ahead time in seconds.
 Fade DbpSec - Framgent recd/play unit fade out time 
               (time to fade to 0 following a fade msg)	
 
+*** Cross-fade Notes
+Cross-fades are initiated by sending any msg to the 'AvailCh.trig' input.
+The 'AvailCh' object then  toggles the parameter router channels and xfader gates.
+Only after this should the new parameter values be transmitted either from
+the 'ActiveMeas' object (through the scale range chains) or directly from the
+'ScMod' object.
+
+Sending parameter values prior to triggering the 'AvailCh' will result in the
+parameters being sent to the currently active 'Kr'. This will result in two
+possibly unintended effects: 
+1) The effect of the parameter will be heard immediately - possibly resulting in distortion.
+2) If a subsequent trigger is sent to 'AvailCh' the parameters will be routed to
+   the fade-out (current) channel rather than the fade-in (next) channel.
  
 
 ****  Live Test Score