Programmable Airline Reservation System
PARS

    (PARS) An IBM proprietary large scale airline
   reservation application, executing under the control of IBM's
   ACP (and later its successor, TPF).

   In the early days of automated reservations systems in the
   1960s and 1970s the combination of ACP and PARS provided
   unprecendented scale and performance from an on-line
   real-time system, and for a considerable period ranked among
   the largest networks and systems of the era.

   IPARS was the international version.

   (1999-01-18)