Jacques Bertin's 7 variables

Currently reading a book called visual function. In this book, the author demonstrated Jacques Bertin's 7 variables. Jacques Bertin was a French guy who had experience on map making for many years. He was famous by publishing a book on the theory of "graphic variables", Semilogie Graphique. In this theory he defined there are 7 elements of visual information and their mutual relationship, which are:

1. Place (position)
2. Shape
3. Size
4. Value (light, size)
5. Texture (within the shape)
6. Hue
7. Orientation (shape) /Direction (line)