(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.