Detection of non-Unicode characters

We've gotten ourselves in a slight muddle. We've copied Word documentation
into (many) xs:annotation blocks in our UTF-8 .xsd files (there are around
300 files). In the process, we have apparently brought along some
non-Unicode characters. This is not tolerated equally well by all tools.

Is there a convenient means of scanning .xsd files to locate non-Unicode
characters? I'm looking for something like a Windows command line filter.

Any idea where I can find such a beast?

Thanks,

Mark
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Mark Feblowitz                                   	
XML Architect
       [t]   617.715.7231                                     	
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Frictionless Commerce Incorporated 	 
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Open Applications Group Incorporated	
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