Its all down to htmls id  There must be only  usage of any id perpageOur Headers autocreate ids and  just creates a   The older html method was named anchor links eg  which also must be unique perpage using name like this is a hack of formsubmissioncode iircTo see clearly view sourceThe main reason to care is if on a nonwiki website you want to bookmark or link to a place thats partway down  Just ViewSource and look for a id or name and that stuff that variable after a  in the url