pronunciation that is font-sensitive

When fonts are mixed in order to acquire a symbol needed for math, such as a dot at half the x-height as a multiplication symbol, that may require that a pronunciation be font-sensitive.

This is for PLS 1.0, <http://www.w3.org/TR/pronunciation-lexicon/>.

An alias and an id attribute would support unique pronunciations for strings, but a method to support categories of pronunciations is needed.

Font sensitivity could also support different voices for main text and for callouts and quotations within the main text, although for that other methods might be available.

Thank you.

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Nick