digraph G {
  parent [
    shape="plaintext"
    label=<
      <table border='1' cellborder='1'>
        <tr><td>data1</td><td>0xFE</td><td>&lt;- SP</td></tr>
        <tr><td>data1</td><td>0xFF</td><td>&lt;- BP</td></tr>
      </table>
  >];
}