Apple Color 1.0 - Manual (Page 174)

174 Chapter 9 Primary In
Overly bright highlights are often the case with images shot on video, where super-
white levels above the broadcast-legal limit of 100 percent frequently appear in the
source media (as seen in the previous example). If left uncorrected, highlights above
100 percent will be clipped by the Broadcast Safe settings when they’re enabled,
resulting in a loss of highlight detail when all pixels above 100 percent are set to be 100
percent.
By lowering the white point yourself, you can bring clipped detail back into the image.
Note: Values that are clipped or limited by Color are preserved internally, and may be
retrieved in subsequent adjustments. This is different from overexposed values in
source media, which if clipped at the time of recording are lost forever.