In PARA 2.6 and higher you can create arrays within other arrays. The controllers which you assign on sub-arrays works only on selected items while controllers on main array updates the entire array.

To find the closest item of an array to the given point P, we should sort the list of points based on the distance from -P-. in this sorted list the first item is always closest point. see the video to find out how to setup controller in 3ds MAX to do so.

This is a simple technique to visualize the discreet curvature of mesh-poly-nurbs (All kind of objects) in 3ds MAX using Mesh controller in PARA . You also will learn how to use the custom attributes with parametric arrays.

Complex result can be achieved by linking two or more parametric array together. In this video we use PARA link controller to connect two independent array with a line segment. This can also be used in animation.

This video demonstrate two different methods of curve subdividing. first method takes the number of divisions and the second method works with the length of subdivisions.

This video shows the potential of using Loft object in Parametric array. If you array the loft object PARA cannot find the information about the PATH object (base line) To get access to the vertices of the path object you need to animate the object before you use it.