创建各种样式的箭头。Arrow spline primitive, useful as a control object in rigging. Works only in 3ds max 2016 SP2 and higher.

超级螺旋，示例的是螺旋风管，螺纹，金属软管，环形坡道等的制作方式，可以支持自定义形状。Example usage would be spiral ductwork, screw threads, flexible metal tubes, circular ramps etc. No smoothing groups are assigned, for smooth look either use Smooth modifier or add points to the spline profile.

This tool is for adding details for your fractured model's internal faces , cracks and so on. It offers a built in solution for doing so without the need of external plugins by using 3ds max default modifiers in a clever and systematic way.