The OEMSETUP.INF file for a printer driver must contain an [io.device] section. The file may also contain the following sections:
[io.dependent]
[disks]
[fonts]
Although Control Panel can install a printer without an information file, Control Panel requires the file if the driver has any related files such as help and font files.
If the user requests the installation of a printer that is not listed in the CONTROL.INF file, Control Panel searches for printer drivers on the specified disk. It will also look for an OEMSETUP.INF file and use that information to copy any additional files the printer driver needs. Although each entry in the [io.device] section contains a description for the driver, Control Panel does not use this description. Instead, it scans for and displays the description field in the driver's executable file.