cornerPoints            Calculate the corner points for the polytope
                        Ax<=b, x>=0 (used some code from the 'intpoint'
                        package)
criterionPoints         Calculate the criterion points of a set of
                        points and find the set of non-dominated points
                        (pareto points) and classify them into extreme
                        supported, non-extreme supported,
                        non-supported.
gMOIP                   2D plots of linear/integer programming models.
integerPoints           Integer points inside the feasible region
                        (Ax<=b).
plotCriterion           Create a plot of criterion space
plotPolytope            Create a plot of a polytope (bounded convex
                        set)
