Although Multigraph constructs much of a graph automatically,
some of the most important aspects of a graph cannot be completely
determined automatically. These include things like titles, legends,
plot styles, color choices, special annotations, and font sizes. A
well-designed graph that easily conveys the intended information to
its audience will have a carefully chosen combination of these things
that fits the data and the context in which it is being presented.
This section describes how to control these aspects of a graph.