Question about substitution definitions as relating to figures

Hello everyone!

I'm back again. Again, please cc me on replies. :)

In looking at the substitution definitions (
http://docutils.sourceforge.net/docs/ref/rst/restructuredtext.html#substitution-definitions),
I see that they include images and replacement text. As far as I can tell,
they do not include the possibility of substituting for figures.

Is this accurate? Do substitutions not yet allow you to substitute for
figures?

I also tried using replace for figures, but it didn't like that.

I couldn't figure out how to add a feature request, if in fact that's not
yet available.

Thanks,

Suzanne

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