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  Message:      RT181
 
  Text:         Invalid parameter error
 
  Severity:     Fatal
 
  Explanation:  A parameter which you have used is not one which is
                recognized by your system.  You have probably used a
                parameter for a run-time system subprogram which is
                not in the first 64K of the Data Division.
 
  Resolution:   Revise your code to contain a parameter which is known
                by your system.  That is, ensure that the parameter is
                in the first 64K of the Data Division.
                                    -♦-