The EnvelopeAddress style that is used for the address on an envelope
contains a Frame into which the address is inserted. What is probably
happening is that the nine lines are too many to be included in that frame.
You can however by modifying the Envelope Address style, modify the
dimensions of the frame. You will probably also need to modify its vertical
position so that the frame remains wholly within the printable area of the
envelope.
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Hope this helps.
Please reply to the newsgroup unless you wish to avail yourself of my
services on a paid consulting basis.
Doug Robbins - Word MVP