Hi Arnold,
@cindex main topic, secondary point, tertiary point
...
<indexterm><primary>main topic</primary><secondary>secondary
point</secondary><tertiary>tertiary
point</tertiary></secondary></primary></indexterm>
Well, as you know, support for the usual index features has been on the
todo list forever. I can't imagine having the time and energy to deal
with them in the foreseeable future. (Maybe some new person would like
to drive Texinfo?)
Anyway, as a workaround for your immediate needs, maybe Patrice can
point you to a hook into the Docbook output where you can tinker with
the index output easily enough. Patrice?
(BTW, if it were me, I would not use commas, because commas are often
used in index entries without any desire for subterms. Even when the
index does support subterms. Some magic character like | seems like it
would be better. But of course for real support one would want
@commands anyway.)
karl
