
          <b>TAN_DEG</b> returns the tangent of an angle given in degrees.
        </li>
        <li>
          <b>TAU</b> returns the value of TAU(N), the number of distinct divisors of N.
        </li>
        <li>
          <b>TAU_VALUES</b> returns some values of the Tau function.
        </li>
        <li>
          <b>TETRAHEDRON_NUM</b> returns the N-th tetrahedral number.
        </li>
        <li>
          <b>TIMESTAMP</b> prints out the current YMDHMS date as a timestamp.
        </li>
        <