The user can create a joint entity as follows.
• Point, Point
• Point: Selects a point on a base body.
• Point: Selects a point on an action body. The distance between two points is fixed as its initial length.
• Body, Body, Point, Point
• Body: Selects a base body of distance joint.
• Body: Selects an action body of distance joint.
• Point: Selects a point.
• Point: Selects a point. The distance between two points is fixed as its initial length.