3F^B ...[??? FREEOUT SECT CENT FGN  
 3F^P ...[   
 3G24 ...[ENTRY SEQUENCE FOR DECHAINING BLK FROM SIZE RING (STRUCTURED FREE CORE)
 3G2C ...[   
 3G2Q ...#MAC  FREEOUT   
 3G35 ...#STR  %A,1  
 3G3D ...      LDX   1  %A                  [ADDRESS OF BLOCK
 3G3R ...      CALL  0  (GFROUT) 
 3G46 ...#NOR