#if 0
fcn addSuffix(n){
   z:=n.abs()%100;
   if(11<=z<=13) return(String(n,"th"));
   z=z%10;
   String(n,(z==1 and "st") or (z==2 and "nd") or (z==3 and "rd") or "th");
}
#else
fcn addSuffix(n){
   var suffixes=T("th","st","nd","rd","th","th","th","th","th","th"); //0..10
   z:=n.abs()%100;
   String(n,(z<=10 or z>20) and suffixes[z%10] or "th");
}
#endif