The message box was used just to simplify the demo. The more important issue is whether the method (using a Built-In Document Property to get the "Total Editing Time") is just as good as all the circumlocution you're currently using. The output could just as easily be output to the document itself. Not only that, there's also a DOCPROPERTY field that will output the same output wherever you want it to appear, in minutes, without the need for a macro at all!

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Cheers,
Paul Edstein
[Fmr MS MVP - Word]