Test for PCDATA

I need to be able to test for PCDATA from an element based on part of
the string.

If is have PCDATA such as TOC_RCVD,  TOC_SENT, REQ_RCVD,REQ_SENT....I
need to have a test that determines something such as  *_RCVD or *_SENT
and then apply the appropriate style.

Thanks for the help.

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