ALLOWED FUNCTIONS are in blue.
ALLOWED BUT DISABLED FUNCTIONS: If any of the SIGNAL-CONTROL buttons are turned off they will appear darker and less colorful. This indicates that the button’s feature is enabled for that display, but is merely OFF, and the feature will be available if the button is clicked ON.
PROHIBITED FUNCTIONS: Not all features are available for all displays. Decisions have been made as to which features are feasible and/or useful for each display. If a feature is not available for a particular display, its button will appear dark
PROHIBITED FUNCTIONS