Either you need to press ALT+F9 to toggle the screen display, or you need to
uncheck tools > options > print > field codes if the problem is seen in the
printed output.

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Graham Mayor - Word MVP
My web site www.gmayor.com
Word MVP web site http://word.mvps.org
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> After I merge the data, I click the "main document setup" icon and
> select "normal word document", the field codes are not going away.
> This used to work prior to applying SP2 to Office 2003. I have
> downloaded all office updates and patches and the issue still exists.
> Help!