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     FORTRAN run-time error F6211
 
     IOFOCUS illegal with non-window unit
 
     The IOFOCUS parameter can only be used with a unit opened as a
     window (opened with FILE = 'USER' and linked with the QuickWin
     library).
 
     Either open the specified unit as a window, or remove the IOFOCUS
     parameter from the OPEN statement.
                                    -♦-