PCTs are referred to as Color Lookup Tables (CLUTs) using the PAMAP terminology. CLUTs can have 1 to 256 entries and can be one of three types: RGB100 where the red, green, and blue intensities are in the range 0 to 100; RGB256 where the intensities are in the range 0 to 255; and HLS100 where the hue, lightness and saturation intensities are in the range 0 to 100.
Currently, only CLUTs of the RGB256 type with 256 entries are supported. The results of reading/writing other types is undefined.
Existing CLUTs can be read/written. The GDB model prohibits the creation of new CLUTs.
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