I have updated the plugins chapter, based on IgorV's updates for the manual of
Cinelerra-CV. (See:
https://github.com/cinelerra-cv-team/cinelerra-cv/commits/master/doc)
Check that they fit.
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Do marketers of the Cin-GG Community discourage linking to sources? I want to remind them of something.

The CV manual was mostly copied (many years ago) from the HV-manual & the Alex's cv-wiki.

The content of the CGG manual was mostly copied from HV/CV-manuals and Features5.1
and paraphrased (in some places)/reordered for pseudo-originality & better understanding/usability (however, you did not solve the problems of the previous manuals).
+  you described well the new functions made by William Morrow aka GoodGuy (but not all as far as I remember).

The content was copied from hv-cv_mans to cgg-man without providing links to hv-cv_sources and contributors.

The CGG-manual contains only  this:
 Information contained in this manual is a description of the CINELERRA-GG program usage and was obtained from various sources to include different communication channels, emails, common knowledge, and write-ups as new features were added
 
In CV:
This manual originates from "Secrets of Cinelerra", an excellent primer written by Adam WILLIAMS from HEROINE VIRTUAL LTD.
In 2003 Alex FERRER created a Wiki based on that manual and added many screenshots and topic descriptions.
The CV-manual contains a list of its contributors.

So,
- I provided a description of how chromakey-hsv works not for the CGG-manual, but for the CV-manual. Therefore you have to indicate the source.
- Marketers of your community should finally make an effort on themselves and indicate the main sources of origin of the contents of the CinGG-manual.
Good luck.