Page size refers to the area of your publication. Paper, or sheet, size is the size of the paper used for printing. Orientation refers to the portrait (vertical) or landscape (horizontal) layout. For more information about changing the orientation, see the Change the orientation of the page section. In this article About page size, paper size, and landscape/portrait orientation Change the page size Change the paper size Change the orientation of the page Change the ruler measurements About page size, paper size, and landscape/portrait orientation ...