I know how to do it. But I can only explain using the terms of the Dutch version of Word 97.
First you type the 'source' field, select it and define it to be a "Bladwijzer" (Insert>Bookmark?). Then when you want a copy of the text use Invoegen>Kruisverwijzing (Insert>Cross reference?) and choose it to be the text of that bookmark, just like you can choose it to be the paragraph number of a Header3 ("See paragraph 3.4.1", never type it yourself because it will change numerous times in future versions of your report).
When you change the source, you need to select the other fields (ctrl-A selects all), then press f9 to recalculate the destination fields.
I trust Frank will come by with the correct terms.
I would like to know if there is a way to define a 'user' field in a word document, so that whatever goes in the field can be automatically copied in another part of the document. Specifically, I would like to have an address typed on one page automatically copied into another field later on. I have searched the Word helps, but only find ways to insert pre-defined data or data merged from an external file.
All help is welcome. Thanks