esian grid as starting point.
        </li>
        <li>
          <a href = "cvt_test12.m">cvt_test12.m</a>
          tests the 'RANDOM' initialization option.
        </li>
        <li>
          <a href = "cvt_test13.m">cvt_test13.m</a>
          works in 2D, computes 100 points, using USER initialization
          and USER sampling, IT_FIXED is 1, 10000 sample points are
          used, and the random number seed is 123456789.  The user
          geometry is the unit circle, with uniform density.
      