use of relevance

Hello,

 

When a <Bind> element has relevance attribute, is it supposed to make the
bound element in the XForms model relevant or the bound control relevant? In
the former case, the control will see that the model is not relevant right
now and hide itself; also the submission will not include that value. In the
later case, the control is hidden but model still holds that value as valid
data. Which approach is correct?

 

Thanks,

Meghana.