#define STRING_CONTROL  0
   #define BACKSPACE_CONTROL 1
   #define BOLD_STRING "\033B"
   
   int printer_type;   /* Type of printer  (string or backspace) */   
                       /* Set at initialization time */

   print(attribute, string)
   int attribute;
   char *string;
       {
       int length;
       switch(attribute)
           {
       case NORMAL_PRINT:
           fprintf(printer,string);
           break;
       case BOLD_PRINT:
           switch(printer_type)
               {
           case STRING_CONTROL:
               fprintf(printer,BOLD_STRING);
               fprintf(printer,string);
               break;
           case BACKSPACE_CONTROL:
               length = strlen(string);
               while (length--)
                   {
                   fprintf("%c",*string);
                   fprintf("\b");
                   fprintf("%c",*string);
                   string++;
                   }
               }
           break;
           }
       }