Merge Control (HP-GL/2)
HP-GL/2 Driver Custom Properties
Nonsystem Driver Custom Properties
Specifies the color brightness of an image.
Gamma Correction is available for all plotters that support raster output. You can specify an amount to increase the red, green, and blue intensity levels of raster data and, to a lesser extent, vector data.
The Raster Gamma Correction value is set to 1 by default, which applies no correction. As you increase this value, you incrementally increase the brightness.