PROGRAM FILE 163: ERROR - REFERENCE TO AN UNDEFINED FUNCTION.                   
    ANSI STANDARD 16.4                                                          
                                                                                
SECTION 163.1: ERROR - REFERENCE TO AN UNDEFINED FUNCTION.                      
                                                                                
THIS IS A TEST FOR A NON-STANDARD FEATURE OF MINIMAL BASIC.                     
TO PASS THIS TEST, THE PROCESSOR MUST EITHER:                                   
                                                                                
   1) ACCEPT THE PROGRAM AND BE ACCOMPANIED BY DOCUMENTATION                    
      ACCURATELY DESCRIBING THE FEATURE'S INTERPRETATION                        
      BY THE PROCESSOR, OR                                                      
                                                                                
   2) REJECT THE PROGRAM WITH AN APPROPRIATE ERROR MESSAGE                      
                                                                                
SEE THE NBS MINIMAL BASIC TEST PROGRAMS USER'S MANUAL                           
FOR DETAILED CRITERIA.                                                          
                                                                                
                            BEGIN TEST.                                         
                                                                                
ABOUT TO ATTEMPT INVOCATION OF FNA, WHICH IS UNDEFINED.                         
PROCESSOR HAS EVALUATED FNA(1) =  0                                             
                                                                                
                             END TEST.                                          
                                                                                
END PROGRAM 163                                                                 
