>>> [log in to unmask] 03/30/05 8:40 PM >>>
> I had posted the note in part because while I had earlier been
> concerned that people that do math couldn't get by without MathML in
> titles, David pointed out there are workarounds.

Of course, and workarounds are fine for searching. When the reference
appears in print you'd want titles properly formatted.

> > 1. Displaying the text content without the markup, with
instructions in
> > the users' guidelines to the effect that any inline markup scheme
> > should
> > leave intelligible text when the tags are removed.
>
> So do as XML parsers and XSLT processor do by default?

Actually, I can't remember if the default XSL templates output text
inside elements or all text nodes (i.e. including attribute values,
which is not what I had in mind).

> I confess I don't quite understand #2.  You're proposing escaped
> markup?  Why?

It's what is done already with TeX: the markup is left as is, visible
to the user. The escaping is for Web pages, Docbook, etc. Plain text
output would not need escapes.

> > 3. Alternate text.
>
> Not following here.

E.g. the alt attribute in HTML's <img> element, or the <textobject>
element in Docbook, used as fallback when the other children of
<mediaobject> aren't available/intelligible. Like:
  <mods:title alt="plain text"><rich/> text</mods:title>
or
  <mods:abstract>
    <mods:plain>Blah blah blah</mods:plain>
    <mods:rich><blah blah="blah"/></mods:rich>
  </mods:abstract>

--Andy