not being rendered on widgets

[will . durrant]

I'm trying to add <fd:help></fd:help> tags to output (below) and repeater widgets but no help icons are being rendered. The documentation implies its possible but I haven't seen it work on anything other than field widgets. Can anyone shed some light on this.

<fd:output id="resultDeliv">
  <fd:datatype base="string" />
   <fd:help>
        <i18n:text i18n:catalogue="help">transportation.input</i18n:text>
  </fd:help>        
</fd:output>

Thanks

Will