A media configuration associates a media size and type with the device PPD file that determines the supported sizes. 

The supported media dimensions for a particular device are defined in the device's PostScript Printer Description (PPD) file. When setting up the software, add the PPD files for each output device type that you will use, and then create the media configurations for each media size that you use with a particular device. If supported by the device PPD, you can also add custom media sizes.

When you add a new device PPD or create a new media configuration, the information is stored in the Printers folder. You can share a single Printers folder between multiple installations by setting the same path on the Folders tab in the Preferences dialog box at each installation.
Note: When printing to a file type, your computer does not need to be physically connected to the target device. 

Standard media resources
The software includes a few standard media resources that cannot be deleted, with limited options for editing their properties.

• Use the default Generic PostScript Printer media resource to print directly to a device that is connected to your computer's operating system, such as a laser printer on your local network.
• When the media choice will be made in a downstream system, you can print to a virtual Press Sheet Size media that is equal to the stock size. You can optionally add margins for marks that must print off the sheet.