This options allows you to set the orientation of the page when it is converted into PDF:
Click [Advanced] from the Layout Tab to access advanced layout options:
Use this option to specify the output page size.
Resolution: Specifies the print resolution. Measured in dots per inch (dpi), higher resolutions produce graphic image that are sharper and show finer detail, while lower resolutions permit faster printing and less detail.
Scaling: Specifies whether to reduce or enlarge documents, and by what percentage. Specifying less than 100 percent reduces the size of the text and images on the page, while specifying more than 100 percent enlarges them. When you increase scaling to more than 100 percent, you might need to use a larger paper size because only the portion of the text that fits on the page will print.
Color: Specifies whether conversions will be done in color or black and white.