Does anyone know of any way of doing a search for duplicate sentences, terms, phrases, etc. in a document and deleting all but the first occurrence of that item---without having to go through each one and deleting it?

I need to know for a long document I'm editing for someone that is a cosmic mess of repetition.

The grammar checker will find duplicate words, but finding duplicate sentences will be more tricky. As far as I know, it must be done manually.

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Stefan Blom
Microsoft Word MVP