Composition refers to the organization, arrangement, and combination of objects within the borders of a drawing space. For a great drawing, you want to bring the eyes of the viewer toward your center of interest within an aesthetically pleasing composition.
The idea that clockwise motion represents the forward motion of time so powerful that it's hard to look at such a watch or clock without having the slightly unsettling feeling that time is running backwards.
Why is there a need for terms veering and backing when clockwise and anticlockwise are accurate descriptions of what is going on. Something like winds veered clockwise with height or winds veered anticlockwise with height leave no room for misinterpretation when describing the shear profile.