How do I uninstall these 4 half brackets on my page?

[Hellothere]

I think it is because I was visiting Yahoo in Japanese version and I can't
find the package to uninstall it.

 

[garfield-n-odie [MVP]]

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".