During installation, the Drivers Control Panel application opens the driver and obtains the description line, originally defined in the module-definition (.DEF) file, from the driver header. The application uses the description line to construct the settings for the [drivers] section. The description line in the .DEF file should have the following form:
DESCRIPTION type(s):text
Following are the parameters in the description line:
| Parameter | Meaning |
| type(s) | Type of driver used for the entry in the SYSTEM.INI file. Multiple entries are separated by commas. |
| text | Text that describes the driver. This will be displayed in the Drivers Control Panel application. |
For example, the header file for an oscilloscope driver (OSCI.DRV) can use the following description line:
DESCRIPTION 'FREQ,AMPL:Oscilloscope frequency and amplitude drivers.'Based on this definition, if both drivers are installed (that is, if the Drivers Control Panel application displays a selection for both FREQ and AMPL), the Drivers Control Panel application creates the following settings in the SYSTEM.INI file:
[drivers]
FREQ = osci.drv
AMPL = osci.drvIf you want your driver added to a named section of the SYSTEM.INI file, you can add the section name to the type of driver. For example, the following description line specifies that a voltmeter driver be added to the [RCC] section:
DESCRIPTION 'VOLTMETER[RCC]:RCC voltmeter driver.'