a) Problem: Users need to give semantic meaning to the
relation between an interface element and its size.
b) Context of application: The same as Colour
assignment pattern.
c) Solution: Organize the information offering the user a
mechanism to choose the role of the element size in the
representation of information through all interfaces. In function
of the criterion chosen, the interface changes the visual element
size (sphere, bar, area, etc.). This solution deals with Challenge
4.
d) Motivation: The same as Colour assignment but
referring to maintain a size-logic consistency through all
interfaces.