 </td>
            </tr>
            <tr>
                <td><code>process</code></td>
                <td>Function to process src in to a string</td>
                <td>function</td>
                <td>No</td>
                <td><code>str:value</code></td>
                <td>
                </td>
            </tr>
            <tr>
                <td><code>required</code></td>
                <td>Is a value required for this field?</td>
                <td>boolean</td>
                <td>No</td>
   