DOCBOOK-APPS: Index range support

[Peter Drivas <peter.drivas@gexinc.com>]

Just as a sanity check, can someone confirm that ranges like:

<indexterm id="radio-ref"
class="startofrange"><primary>Radio</primary></indexterm>

(some xml)

<indexterm startref="radio-ref" class="endofrange" />

does not work? I have searched the current version of the xsl stylesheets
and the archives
and it appears this is an unsupported feature. If so, has anybody taken a
crack at
implementing it?

Thanks,
Peter