Section Numbers instead of sectin names in indexes.

[Klaus Schilling <schilling.klaus@web.de>]

Hello list,

In the html output, automatically generated index entries display the
section title or titleabbrev, depending on one of the parameters,  for
each entry. But those are not necessarily unique. Is there a way to patch
the xsl sheets in order to make the automated index display section
numbers instead of section titles? 

Klaus Schilling