A subset of algol 68 allowing simpler compilation, intended mainly for numerical computation. It was rewritten in bliss for the pdp-11, and later in pascal. It is available as shareware from Charles Lindsey <chl@cs.man.ac.uk>.

Version 2.3 runs on sun-3 under sunos 4.x and atari under gemdos (or potentially other computers supported by the amsterdam compiler kit).

["A Sublanguage of ALGOL 68", P.G. Hibbard, SIGPLAN Notices 12(5), May 1977].