(* Title: HOL/HOLCF/IOA/NTP/Action.thy Author: Tobias Nipkow & Konrad Slind *) section ‹The set of all actions of the system› theory Action imports Packet begin datatype 'm action = S_msg 'm | R_msg 'm | S_pkt "'m packet" | R_pkt "'m packet" | S_ack bool | R_ack bool | C_m_s | C_m_r | C_r_s | C_r_r 'm end