When you first set up Microsoft Windows, you select the printer you'll use with
your system. To change this selection, use the Add New Printer and Delete
Printer commands from the Installation Menu in the Control Panel (run
CONTROL.EXE from the MS-DOS Executive window).
Also, from the Setup Menu in the Control Panel, you can use the Printer command
to specify a system default printer and set its output modes.
The system default printer is the printer that applications designed for
Microsoft Windows will use. Printer output modes are printer-specific
settings, such as Portrait versus Landscape, or color for plotters.