Every time you run this program, all nodes on the elements in the active group are added to the group, all elements connected to those nodes, and then again, all nodes on the new group of elements. You can run this program over and over to effective grow your group one connected layer of elements at a time. This is a very handy little program when trying to debug a complicated model.

This API program allows the user to select a surface, and then adds any elements attached to this surface to the active group.

This API program allows the user to select a surface, and then creates a new group and adds the nodes attached to the selected surface to it.

The API will update the selector with independent nodes of all selected rigid elements. Handy for applying loads and constraints via rigid links.