File=>Page MarginΒΆ

Use the Page Margin dialog box to adjust the margin in the active document.

Use Printer Setup
When this check box is selected, paper size and orientation will be taken from the printer settings. To change paper size or orientation, choose File=>Page Setup.
Paper Size
Paper size can be set using height and width or a size can be chosen from the Format box.
The chosen format can be printed in portrait or landscape form.
Margins are entered in centimeters. On a color monitor margins will be shown in the color magenta. These lines will not be printed as they are only a help tool for the creation of the diagram.