DOCBOOK-APPS: Re: How to select <imageobject> alternativein<mediaobject>?

[Steinar Bang <sb@dod.no>]

>>>>> Jirka Kosek <jirka@kosek.cz>:

> Nice idea, but we should investigate further how it would interfere
> with profiling. Using role="html|fo" on images would mean that
> people wouldn't be able to easily profile document on role attribute
> used on other places.

Could perhaps role be used for built-in settings, and condition be
used for profiling?  The choice of roles (pardon the pun) of the two
attributes is arbitrary.  I picked role for built-in settings because
there is precedence in <emphasis role="bold">

[snip!]
> So I think that at least:

> 1. image selection based on role attribute should be controlled by
> on/off parameter

Not sure I understand how this on/off parameter is supposed to
work.  Could you explain a bit more?