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ok, here is a proposal: looking into the code, I find that
links and multilinks
are ordered for the titles (linkcl.labelprop()).

As I said, I think that is much less useful than ordering
for 'id'.

Therefor I replaced all:

            sort_on = linkcl.labelprop() 

by

           sort_on = 'id'

(i.e. in LinkHTMLProperty.field, 
 LinkHTMLProperty.menu, and 
MultilinkHTMLProperty.menu)

and it has the effect I want. You may consider applying 
this tiny change to cvs (at least as a temporary solution).