That's all very well, but all you've done is add some Style names. You haven't told Word anything about what attributes this Styles have (e.g. italic, bold, superscript, subscript, etc.).

The wildcard Find expression in the macro I posted shows you how to exclude Greek and operator content. All you need do is modify that to find just the Greek content.

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]