anchor.diff:  
       % see if computeFractalData computes more data
       RowsOut = simpleFractal:computeFractalData( RowsIn, ThisRow,
  -               XPix, XR, DeltaX, Width,  
  -               YPix, YI, DeltaY, Height,  
  +               XPix, XR, DeltaX, Width,
  +               YPix, YI, DeltaY, Height,
                  ConfigMap),
   
       %% is output what was expected?
  
positive.code:     %% setup some test config and test data
      ConfigMap = #{ fractalAlg => julian,  % Fractal Algorithm is julian
         imageFileName => './EolTest.png',  %image file created
         width => 5, 
         height => 5, 
         cReal => 0.1, % real portion of C0
         cImaginary => -0.1, % imaginary portion of C0
         zReal => -0.1, %real portion of Z0 (don't care for Julian)
  
negative.code:       ?config(zReal, Config),
        ?config(zImaginary, Config) }.
  
  testMakeData(_Config) ->
      %% example config
      FractalImageFileName = "./testMakeData.png",  %image file created
      DataFileName         = "./testMakeData.erl.txt",  %put data here
      ConfigMap = #{ fractalAlg => julian,  % Fractal Algorithm is julian
                     imageFileName => FractalImageFileName,
                     dataFileName         => DataFileName,
  