. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "LUs in this frame denote a period of time in which an Enabled_action becomes possible. The Duration of this time period can be both exact and inexact. An Agent who performs the Enabled_action may be mentioned as well.\nAllow a three-day window for delivery. DNI"^^ . . "frame"^^ . .