ClickFile
menu Plotter Manager.At the Command prompt, enter
plottermanager.
In the Plotter Manager, double-click the Plotter Configuration
(PC3) file you want to edit.
In the Plotter Configuration Editor, Device and Document
Settings tab, double-click User-Defined Paper Sizes &
Calibration to display the calibration and paper size
settings.
Select Modify Standard Paper Sizes.
Under Modify Standard Paper Sizes, select the paper size you
want to adjust. Click Modify.
In the Custom Paper Size wizard, adjust the printable area as
necessary. Click Finish to exit the Custom Paper Size wizard.