Before you print your drawing, you specify the size of the paper and whether the plot orientation is landscape or portrait. You can choose a paper size from a standard list or create a custom size. You can base this size on millimeters or inches, depending on which option you choose. You also can specify the unit type used for plotting (millimeters or inches).
The Paper Size and Orientation area of the Print / Plot Configuration dialog box also reports the area on the paper available for plotting, that is, the paper size minus the margins.
If you use a system printer driver, the paper size is determined in Windows Control Panel; therefore, the Size option is not available. To ensure that the plotted image fills the entire sheet of paper, the paper size and orientation settings should match Control Panel settings.