Sounds like you have manual line breaks (or possibly a table or text box).
See http://word.mvps.org/FAQs/Formatting/CleanWebText.htm

--
Suzanne S. Barnhill
Microsoft MVP (Word)
Words into Type
Fairhope, Alabama USA
Word MVP FAQ site: http://word.mvps.org
Email cannot be acknowledged; please post all follow-ups to the newsgroup so
all may benefit.

"TF" wrote in message
...
I inserted a section break into a document, and changed the paper
orientation
of the section from portrait to landscape.
However, the text on the landscape page still breaks after 17 cm - my
portrait page width. I'd like to change it so it breaks at landscape
width,
but can't find how to change it.

Help please??

TF