What is this grey box around my document?

[#1]

I have this odd shaped grey box around the background of all my documents.  Anyone know what this is, what its used for, and how to get rid of it?

[#2]

I have this odd shaped grey box around the background of all my documents.  Anyone know what this is, what its used for, and how to get rid of it?

[#3 · Accepted solution]

This is called pasteboard, it is a non printable area. You can use it to store images, text elements etc that you would finally place on the document. Anything placed on it will not print.

-Manan