        </li>
        <li>
          <a href = "product_rule_gl_output.txt">
          product_rule_gl_output</a>,
          the output from running the test on the 2D rules.
        </li>
      </ul>
    </p>

    <p>
      <b>PRODUCT_RULE_TANH_SINH</b> is a family of tanh-sinh product rules which
      includes 2D rules of orders 1x1, 3x3, 7x7,
      15x15, 31x31, 63x63, and 127x127 points.
      <ul>
        <li>
          <a href = "../../datasets/product_rule_tanh_sinh/product_rule_tanh_sinh.html">
   