ALGOL 68-R

April, 1970. Royal Signals and Radar Establishment, Malvern, Worcs UK, 1970.

A restriction of ALGOL 68 permitting one-pass compilation: it required that identifiers, modes and operators must be declared before use. It had no automatic proceduring and no concurrency. It was implemented in ALGOL 60 under the GEORGE 3 operating system on an ICL 1907F computer.

"ALGOL 68-R, Its Implementation and Use", I. F. Currie et al, Proceedings of the IFIP Congress 1971, North-Holland, 1971, pp.360-363.