  @SuppressWarnings("unchecked")
  Option<Double> NODE_DEPTH = new Option<Double>("NODE_DEPTH", Double.class,
      bundle, new Range<Double>(Double.class, "{[1,1E9]}"), 1d,
      new ValuePairUncomparable<Option<OutputFormat>, Range<OutputFormat>>(FORMAT, SBML_CONDITION));

  /**
   * The position on the z-axis where the entire two-dimensional graph should
   * be drawn.
   */
  @SuppressWarnings("unchecked")