See http://support.microsoft.com/?kbid=839371 "Margin marks or
crop marks appear on each corner of the page when you open a
document in Word 2002 or in Word 2003".

Me wrote:

I have two 90 degree angles on opposite sides of the page appearing at the
top of all my Word 2003 documents. They look like margin barriers (for the
lack of a better word). What are they, and how do I turn them off? My
co-workers don't have them showing in their Word application.

Thanks!