Thank you Andrea for providing this information and putting it all together from various sources and your knowledge.  I have proofread it, made minor changes like adding a comma or fixed misspelled word, and checked it into GIT. 

Note to others, Andrea does a lot of work to get this very nicely formatted and it is a lot of technical information and a great asset to the manual.

Note to Andrea, since I do not really comprehend much of this, I do have a couple of questions:
  1) What is "NB"? as in the line "ACES and OpenColorIO have an SRC workflow. NB: the monitor must still
be calibrated to avoid unwanted color shifts."  I noticed it is used in 6.1 the Proxy section also.  I do not know what it represents.
  2) Does "3..4" and "0..255" represent "from 3 to 4" and "0 to 255"?  These are in your new CMS section.


On Sun, Aug 7, 2022 at 1:09 PM Andrea paz via Cin <cin@lists.cinelerra-gg.org> wrote:
> Is there possibility to extend section on XYZ colorspace, explaining it comes from experiments on how  human eye receptors receive color (they obviously do not use technological rgb notation), because it was such source of confusion to me? Also, saying primaries are most possible colored points (greenest green in G direction, reddest red in R direction, etc) in choosen colorspace might be useful , at least I found those remarks clarifying illustrations nicely.
> Example of colormatrix settings also might be useful.
Revision 2, after Andrew's suggestions. Talking about human vision and
colormatrix settings are beyond my skill set and also too much for an
introduction. I have put up a link that may be of interest.
https://peteroupc.github.io/colorgen.html
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