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.
Click Custom Paper Sizes.
Under Custom Paper Sizes, select a paper size from the
list.