< possible functions for p11 and p18:
* f52 0 65 7 0 32 1. 32 0;   < linear: p9->p10->p9  the default
* f50 0 65 7 0 64 1.;            < linear: p9->p10,  and  p15->p16
* f60 0 65 5 .01 64 1.;	         < exponential: p9->p10->p9 
* f62 0 65 5 .01 32 1. 32 .01;   < exponential pyramid :p9->p10->p9
* f54 0 65 9 .25 1 0;	         < 1st quarter of sine wave p9->p10
* f55 0 65 9 .5 1 0;	         < 1st half of sine wave p9->p10->p9
<  optional functions if tables used: f98 = table of soundin. numbers,
< f99 = table of durations ; to use, remove comments, edit & complete
< *f98 0 size -2 soundin.numbers
< *f99 0 size -2 durations

SFVPAN                       < mono input; 2 channel pan output   
p3  
du  
     < p4 = soundin.#, or, if negative, index to function tables 98 & 99
p4 
  < OPTIONAL p-fields (p5 - p8): p5 = amplitude multiplier
p5      
  < p6 = duration skipped from front of soundfile
p6  
  <  p7 = fade-in time : if negative or between 100.0 & 101. = % p3
p7   
  <  p8 = fade-out time : if negative or between 100.0 & 101. = % p3
p8   

< values for pan between LC(left channel) and RC (right channel) : p9 - p14
  < p9 = 1st decimal % to LC (0 -1.)
p9    
  < p10 = 2nd decimal % to LC (0 -1.)
p10    
p11                            < function number for change : default = f52
p12                            < starting phase (0 -1.)
< make sure that p13+p9 and p13+p10 are < 1.; also p9-p13 and p10-p13 >= 0
p13                               < rand. dev. decimal % (e.g. .01-.1)
p14                               < rand. dev. rate (e.g. 3.-5.5)
< values for variable pan rate : p15 - p21
p15                               < 1st pan rate
p16                               < 2nd pan rate
< p17 flags: 0 = 1/p3 ; >100 = (p17-100)/p3 ; negative = period for change
p17                               < rate of change between p15 & p16
p18                               < function number for change : default = f52
p19                               < starting phase (0 - 1.)
p20                               < rand. dev. decimal %
p21                               < rand. dev. rate (e.g. 3. - 6.)
