A generic presentation of color, sound, etc., which is formatted later for a particular device
Vigor: "vigor.h"
Color: "rgb.h", "rgb2.h" and "rgb2.cpp"; "color.h", "color2.h" and "color2.cpp"
Sound: "sound.h", "sound2.h" and "sound2.cpp"; "sounddevice.h"; they use "shape.h"