International Organization for Standardization (ISO)
Latest
ISO 6160:1979
Scope
Adopts ANSI standard X3.53-1976 and French standard NF Z 65-500 as PL/1 programming language standard for the English and French versions, respectively.
ISO 6160:1979 history
1979ISO 6160:1979 Programming languages; PL/I (Endorsement by ISO of ANSI standard X3.53-1976)