huey: Internal maintenance specification

# - - -   M e n u B a r . _ _ h e l p C M Y

    def __helpCMY ( self ):
        """Help for the CMY color model.
        """
        self.__dialog ( 'Help: The CMY color model',
            "In the CMY color model, color is specified by three "
            "parameters: cyan, magenta, and yellow.  These are called "
            "the 'subtractive primary colors;' if you drag all three "
            "sliders all the way up, you get black. CMY color mixing "
            "is used in printing and in color darkroom work." )