What is the relationship between the Viewing Window and the Triad windows?
The Viewing Window is not directly related to the Triads. This window shows groups of analogous colors (colors which lie side by side and look nice together), and when the Viewing Window is aligned properly to any set of four colors in that position on the wheel (all four colors are enclosed in the Viewing Window), then the Triad windows will also align with the basic triad colors (RGB, CMY). If the windows are not aligned, you can still get a good idea of colors that form a triad relationship, and will work well together in a design.