ALGOL 58 - meaning and definition. What is ALGOL 58
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What (who) is ALGOL 58 - definition

PROGRAMMING LANGUAGE
ALGOL 58 programming language; ALGOL 58 (programming language); IAL programming language; IAL (programming language); International algorithmic language; Algol 58; International Algebraic Language; BALGOL; Draft:BALGOL

ALGOL 58         
<language> An early version of ALGOL 60, originally known as "IAL". Michigan Algorithm Decoder (MAD), developed in 1959, was based on IAL. ["Preliminary report - International Algebraic Language", CACM 1(12):8, 1958]. [Details? Relationship to ALGOL 60?] (1999-12-10)
BALGOL         
<language> ALGOL on Burroughs 220. [Sammet 1969, p. 174]. (1996-04-15)
International Algebraic Language         

Wikipedia

ALGOL 58

ALGOL 58, originally named IAL, is one of the family of ALGOL computer programming languages. It was an early compromise design soon superseded by ALGOL 60. According to John Backus

The Zurich ACM-GAMM Conference had two principal motives in proposing the IAL: (a) To provide a means of communicating numerical methods and other procedures between people, and (b) To provide a means of realizing a stated process on a variety of machines...

ALGOL 58 introduced the fundamental notion of the compound statement, but it was restricted to control flow only, and it was not tied to identifier scope in the way that Algol 60's blocks were.