MOL-360
MOL-360 is a mid-level systems programming language for the IBM System/360 family of computers based on Algol.
The only data structure supported by the language is Array [data structure|arrays]. It has no support for floating point data, but allows direct access to processor registers and inline assembly language.
MOL-360 was used by System Development Corporation to develop the ADEPT time-sharing system.
A similar language, MOL940, was written for the SDS 940 computer system.