The Raster-Custom Properties dialog box controls the custom settings for the Raster
driver. The Raster driver is a nonsystem driver that supports several raster file
formats including BMP, CALS, TIFF, PNG, TGA, PCX, and JPEG. The Raster driver is most
commonly used to output to files for desktop publishing.

All but one of the formats supported by this driver produce “dimensionless” raster
files that have size in pixels but do not have size in inches or millimeters. The
Dimensional CALS format is for plotters that can accept CALS files. If your plotter
accepts CALS files, you must specify a real paper size and resolution. Specify the
resolution in dots per inch in the Vector Graphics pane of the Plotter Configuration
Editor.

By default, the raster drivers only output to a file. However, when configuring a
driver; you can choose one of the available ports on your computer. When configured
for outputting to a port, the driver outputs to a file and then copies that file to
the specified port. To plot successfully, make sure that the device connected to the
configured port can accept and process the file.

The type, size, and color depth of the raster file determines the final file size.
If your computer has enough memory and disk space, you can produce a file thousands
of megabytes in size that requires several days to plot. When selecting a raster size,
you can reduce the size of the file created by using the lowest color depth you need.

You can configure the background color for raster plots in the Custom Properties dialog
box in the Plotter Configuration Editor. If you change the background color, any objects
plotted in that color are invisible.