weird symbols in the four page corners

[Massimo]

Does anybody know what it means when in the four corners of the page in print
layout view I see two little lines that form an "L" (on the upper right
corner, then in a specular way on the other corners).
They basically mark the margin positions.
I am not aware of any option which shows those symbols ...

thanks
Massimo

 

[Carol]

This article should help you.

http://support.microsoft.com/?kbid=839371

 

[Massimo]

Thanks it helped!
Massimo

This article should help you.

http://support.microsoft.com/?kbid=839371