# Ale Reference System Node

Ale Reference System Node entities defines a group of nodes that control the motion of an ALE mesh.

It is used only when PRTYPE = 5 or 7 in a corresponding *ALE_REFERENCE_SYSTEM_GROUP card.

## LS-DYNA Cards

Card Description
*ALE_REFERENCE_SYSTEM_NODE Defines a group of nodes that control the motion of an ALE mesh.