Makes the Compiler display its internal reference number at the start of a compilation as well as at the bottom of every listing. 
    
  
 
    Syntax:
 
       
      >>-.---.-.----.--REFNO---------------------><
   +-/-+ +-NO-+
 
    Properties:
 
       
       
      
 
           
           
           
             
              | Default: | NOREFNO | 
 
             
              | Phase: | Syntax check | 
 
             
              | $SET: | No |