function exampleHessenberg
  extends Modelica.Icons.Function;
  input String fileName = DataDir + "m.mat" "Name of file where the matrix is saved" annotation(
    Dialog(loadSelector(filter = "MAT files (*.mat);; All files (*.*)", caption = "Open file with matrix")));
  input String matrixName = "A" "Name of the matrix";
end exampleHessenberg;