PackageDescription
 Box2D.CollisionContains classes handling detecting collisions.
 Box2D.Collision.ShapesContains shape classes and corresponding definitions.
 Box2D.CommonContains utility functions.
 Box2D.Common.MathContains 2D vector utilities.
 Box2D.DynamicsContains b2World, b2Body and related classes.
 Box2D.Dynamics.ContactsContains classes for tracking contacts between shapes.
 Box2D.Dynamics.JointsContains joint classes and corresponding definitions.