proc format library = ia;
   value dates (multilabel) 
         '01jan2000'd - '31mar2000'd = '1st Quarter'
         '01apr2000'd - '30jun2000'd = '2nd Quarter'
         '01jul2000'd - '30sep2000'd = '3rd Quarter'
         '01oct2000'd - '31dec2000'd = '4th Quarter'
         '01jan2000'd - '30jun2000'd = 'First Half of Year'
         '01jul2000'd - '31dec2000'd = 'Second Half of Year';
run;


options fmtsearch = (ia);

proc tabulate data = ia.sale2000 format = dollar15.2;
   title 'Example using Multilabel Formats';
   format Date dates.;
   class Date / mlf;
   var RevCargo;
   table Date, RevCargo*(mean median);
run;

ods listing close;
ods rtf file='tabulate.rtf';
proc tabulate data = ia.sale2000 format = dollar15.2;
   title 'Example using Multilabel Formats';
   format Date dates.;
   class Date / mlf;
   var RevCargo;
   table Date, RevCargo*(mean median);
run;
ods rtf close;
ods listing;