Page Setup Dialog - Page
Change the paper type by clicking the button.
Select the preferred printer or choose Any Printer to see the formats supported by all printers. Pick a paper size and page orientation (portrait, landscape or reverse) to suit the best layout for your document.
Specify the required margins of the page. Nothing will be printed inside these margins, not even page numbers. The margins will be measured in the same units (millimetres, points or inches) as the paper size. Change the unit in the paper and layout section to best fit your needs. You may also specify whether the page is centered horizontally and/or vertically on the printable part of the page.