This read-only TruthValue specifies, network-wide, whether the DE (Discard Eligibility) bit of Frame Relay frames can be modified by the switch; the DE bit can be modified if the value is True. An administrator relies on this policy setting to know whether the switch is permitted to mark Frame Relay frames as discard-eligible during congestion, which affects how FR congestion is managed. For example, if this is set to False, the operator knows the switch will pass Frame Relay frames through without altering their DE marking regardless of internal congestion conditions.