plate parameter <code>B</code>, which is not shown, for the
    <a href="#chaining">base class chaining</a> technique.</p>

    <p>The primary operand type <code>T</code> needs to be of class type,
    built-in types are not supported.</p>

    <table cellpadding="5" border="1" align="center">
      <caption>
        Simple Arithmetic Operator Template Classes
      </caption>

      <tr>
        <td colspan="3">
          <table align="center" border="1">
            <caption>
              <em>Key</em>
  