XForm Example

<-- In the header --> 
<xform>
  <submit id="sub-b" target="..." />
  <model id="poll">
    <number name="choiceCode" enum="closed">
      <value>-1</value>
      <value>10</value>
      - - -
    </number>
  </model>
<xform>
<-- in the body: -->
<xfm:exclusiveSelect ref="poll/choiceCode">
  <xfm:caption>When?</xfm:caption>
  <xfm:item value="-1">Don't know</xfm:item>
  <xfm:item value="10">0-6 Months</xfm:item>
  - - - 
</xfm:exclusiveSelect>
<xfm:submit ref="poll" to="sub-b">
  <xfm:caption>Submit</xfm:caption>
</xfm:submit>

<!-- Possible content -->
<!-- of submission    -->
<choiceCode>10</choiceCode>