# Ale Reference System Switch

Ale Reference System Switch entities allows for the time-dependent switches between different types of reference systems, that is, switching to multiple PRTYPEs at different times during the simulation.

This command is required only when PRTYPE = 6 in ARSG card.

## LS-DYNA Cards

Card Description
*ALE_REFERENCE_SYSTEM_SWITCH Allows for the time-dependent switches between different types of reference systems.