> How do I change the margins on a 3-fold brochure?
By physically altering components of your printer?
> I can extend them in the
> document but in print preview there appears to be a default.
The default (and only) setting is that which your printer reports as the
maximum area it can print. Look for an expanded margins or borderless
option in your printer driver

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Ed Bennett - MVP Microsoft Publisher
http://ed.mvps.org