We're working on a new ColourSpace interactive User Manual.

https://www.lightillusion.com/colourspace_manual.html

Each of the GUI icons/buttons/control areas, within each window, can be clicked to see a pop-up info box on the functions/options the clicked area manages.
This is a work-in-progress, but we would be happy for any feedback pointing out any errors, omissions, missing information, etc.

Steve