PRINT ' '
PRINT 'MFILL:  Attempts to interpolate values for undefined pixels'
PRINT 'in Matrix (0).  Syntax:  MFILL(distance)'
PRINT ' '
PRINT 'MXMIN,MXMAX=',MXMIN,MXMAX
PRINT 'MYMIN,MYMAX=',MYMIN,MYMAX
PRINT ' ' 
