3=H? ...[??? MULTIFID SECT CENT FGN 11 DOC  
 3=HP ...[   
 3=JJ ...#MAC  MULTIFID      [INVERTS BITS SPECIFIED BY A STRING OF PARAMETERS   
 3=KC ...#STR  %D
 3=L= ...(   
 3=M5 ...#DEF  20?=%A
 3=MY ...#DEF  21?=%D
 3=NR ...#SKI  21?-20?/%C                   [ERROR UNLESS %A <OR= %D < %A+%C 
 3=PL ...!ERROR  
 3=QF ...#DEF  20?=%B+21?-20?               [20?=+ OR - BIT NO TO BE INVERTED
 3=R# ...#DEF  20?=20?&#40000000<1$1*2-1*20?[TAKE ITS MOCULUS
 3=S7 ...#FID  20? 20? 1                    [INVERT SPECIFIED BIT
 3=T2 ...      MULTIFID %A,%B,%C,%E,%F,%G,%H,%I,%J,%K,%L,%M,%N,%O
 3=TT ...)   
 3=WN ...#NOR