From The Free On-line Dictionary of Computing (19 January 2023):
LIS
Langage Implementation Systeme.
A predecessor of Ada developed by Ichbiah in 1973. It was
influenced by Pascal's data structures and Sue's control
structures. A type declaration can have a low-level
implementation specification.
["The System Implementation Language LIS", J.D. Ichbiah et al,
CII Honeywell-Bull, TR 4549 E/EN, Louveciennes France (Dec
1974)].
["The Two-Level Approach to Data Independent Programming in
LIS", J.D. Ichbiah et al, in Machine Oriented Higher Level
Languages, W. van der Poel ed, N-H 1974, pp.161-169].
(1994-12-01)