DOCBOOK-APPS: more docbook transformation questions

["Robert P. J. Day" <rpjday at mindspring dot com>]

  i'm just about to go through the docbook elements carefully so
i may run across the answer myself, but i'm trying to figure out
how to mark up program code with line annotations so that the
annotations are left-aligned, for aesthetics.

  is there a way to do this?  one solution, as ugly as it would
be, would be to do this as a table, but that makes me queasy.
is there a better way?  fyi, once again, at least for now, i'm
just concerned about generating HTML, but will be going after
other output formats soon.

rday