For a procedure just put the name of the query between the procedure tag.
Example form Nunit tests
<!-- For procedure, the parameters of the parameterMap must in the same order
as for the procedure paramaters-->
<procedure id="InsertAccountViaStoreProcedure" parameterMap="insert-params">
ps_InsertAccount
</procedure>
<procedure id="SwapEmailAddresses" parameterMap="swap-params">
ps_swap_email_address
</procedure>
<procedure id="GetAccountViaSP" parameterMap="select-params" resultClass="Account">
ps_SelectAccount
</procedure>
Cheers,
Gilles