To add a custom paper size from scratch
Plot
panel
Plotter
ManagerAt the command prompt,
enter plottermanager. When a nondimensional raster image, such as BMP or TIFF, is plotted, the size of the plot is specified in pixels, not inches or millimeters.
A cross is printed that defines the paper size and a rectangle that defines the printable area. If all four sides of the rectangle are not printed, increase the printable area.