Defines all available rendering intents as constants. For use with
See: PDF1.7 s18.104.22.168
Colors should be represented solely with respect to the light source.
Colous should be represented in a manner that provides a pleasing perceptual appearance.
Colous should be represented with respect to the combination of the light source and the output medium's white point.
Colors should be represented in a manner that preserves or emphasizes saturation.
Public Class Methods
Returns the argument normalized to a valid rendering intent.
If the argument is a valid symbol, it is just returned.
Otherwise an error is raised.