## Presentation Device Driver Reference for OS/2

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### Improved Performance of Drivers in the Workplace Shell

.EXPAND (Optional)

Lists the device names supported by a hardcopy driver. Using this extended attribute improves performance over use of OS2_PM_DRV_DEVICENAMES ( especially from a diskette). Names (values) for this extended attribute are NULL-terminated strings. An example of this extended attribute is .EXPAND= HP LaserJet II\0HP LaserJet III\0\0.

.ICON (Optional)

Gives the icon definition used by the Workplace Shell to display this hardcopy driver. This extended attribute is automatically created during the build process if the ICON keyword is used with a resource identifier of 1, or if the DEFAULTICON keyword is used in the RC file for a hardcopy driver. An example of this extended attribute would be .ICON 1 LASER.ICO.

.HIDDEN (Optional)

Indicates which hardcopy driver is used by files associated with a printer driver. This attribute is used by the Workplace Shell to prevent display of these files in a directory folder. An example of this extended attribute is .HIDDEN=LASERJET.DRV.