Windows XP and later supports print optimization functionality on the Advanced tab of the printer property pages. If Print Optimizations are disabled, Unidrv prints PCL XL data in raster mode.
*MirrorRasterPage? is not supported in PCL XL mode.
PCL XL does not support switching between PCL XL and raster modes.
The GPD *TextHalftoneThreshold attribute name is not supported on a PCL XL minidriver. Text in any resolution is grayscaled in PCL XL mode.