FG52 ...[??? PROPERTY SECT DEVT FGN 2 DOC   
 FGJL    #MAC  PROPERTY  
 FH4=    [   
 FHHW    [ THIS MACRO ANALYSES A PARAMETER OF THE FORM 'PROPERTY(PROPERTYNAME&   
 FJ3G    [ PROPERTYNAME1&ETC)'OR'PR(PROPERTYNAMES)   
 FJH6    [   
 FK2Q    [ %A  LABEL TO JUMP TO IF THE PARAMETER IS NULL OR NONEXISTENT  
 FKGB    [ %B  NO. OF THE FIRST PARAMETER NOT TO BE CHECKED FOR PR OR PROPERTY   
 FL22    [ %C  NO. OF THE 2ND   PARAMETER NOT TO BE CHECKED FOR PR OR PROPERTY   
 FLFL          LDN   4  %B   
 FL^=    #SKI %C 
 FMDW          LDN   5  %C-%B
 FMYG    #SKI %C 
 FND6    #SKI
 FNXQ          LDN   5  0
 FPCB          DOWN     LISTPARS,4   
 FPX2          BRN      %A   
 FQBL    #NOR