The Use Screened Vectors property is only applicable to the Bentley HP-GL/2 printer driver. When set to True, it instructs the driver to use SV (screened vector) and FT (fill type) instructions that simulate colors using grayscale shading rather than use the normal RGB pen assignment and selection instructions. It may be necessary to set this property to True when printing HP-GL/2 files to monochrome laser printers. The default value is False