    use_flying_edges = vtk_version_ok(8, 2, 0)

    colors = vtkNamedColors()
    ifn, index = get_program_parameters()

    # Prepare to read the file.
--
    use_flying_edges = vtk_version_ok(8, 2, 0)

    file_name, start_label, end_label = get_program_parameters()
    if start_label > end_label:
        end_label, start_label = start_label, end_label

--
    use_flying_edges = vtk_version_ok(8, 2, 0)

    colors = vtkNamedColors()

    file_name = get_program_parameters()

--
    use_flying_edges = vtk_version_ok(8, 2, 0)

    colors = vtkNamedColors()

    file_name = get_program_parameters()

--
    use_flying_edges = vtk_version_ok(8, 2, 0)

    colors = vtkNamedColors()

    file_name = get_program_parameters()

--
    use_flying_edges = vtk_version_ok(8, 2, 0)

    colors = vtkNamedColors()

    file_name = get_program_parameters()

--
    use_flying_edges = vtk_version_ok(8, 2, 0)

    n = 20
    radius = 8
    blob = make_blob(n, radius)

--
    use_flying_edges = vtk_version_ok(8, 2, 0)

    colors = vtkNamedColors()

    colors.SetColor('SkinColor', [240, 184, 160, 255])
    colors.SetColor('BackfaceColor', [255, 229, 200, 255])
--
    use_flying_edges = vtk_version_ok(8, 2, 0)

    colors = vtkNamedColors()

    dicom_dir, iso_value = get_program_parameters()
    if iso_value is None and dicom_dir is not None:
--
    use_json = not vtk_version_ok(9, 0, 20210918)
    if use_json:
        if not json_path:
            print('modules.json (from your VTK build directory) is needed.')
            return
        jpath = Path(json_path)
--
    use_flying_edges = vtk_version_ok(8, 2, 0)

    file_name = get_program_parameters()

    colors = vtkNamedColors()

--
    use_flying_edges = vtk_version_ok(8, 2, 0)

    colors = vtkNamedColors()

    path = Path(data_folder)
    if path.is_dir():
--
    use_flying_edges = vtk_version_ok(8, 2, 0)

    colors = vtkNamedColors()

    sample_resolution = get_program_parameters()

--
    use_improved_compass_widget = vtk_version_ok(9, 2, 20220831)
    
    colors = vtkNamedColors()

    actor = vtkAnnotatedCubeActor()
    actor.GetCubeProperty().SetColor(colors.GetColor3d('PeachPuff'))
