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INCITS/ISO/IEC 9593-1:1990 (S2022)
Information Processing Systems - Computer Graphics - Programmer's Hierarchical Interactive Graphics System (PHIGS) Language Bindings - Part 1: FORTRAN (Formerly X3.144.1)
Specifies a language-independent nucleus of a graphics system. For integration into a programming language, PHIGS is embedded in a language-dependent layer obeying the particular conventions of that language. This standard specifies such a language-dependent layer for the FORTRAN language.
InterNational Committee for Information Technology Standards [incits]