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MUMPS, also known as M, is a programming language first developed in 1966 by Neil Pappalardo at Massachusetts General Hospital in Boston. It has many unique features, including a built-in database, an absence of distinct data types, and a syntax which contains no reserved words. MUMPS programs exist in separated "memory partitions" and can reference both RAM and disk storage using variables. This feature permitted unusually fast data access times regardless of storage medium. Although nearly 50 years old, MUMPS is still widely used, particularly by financial and medical institutions.

"Hello, World!" written in MUMPS

 hello() write "Hello, World!",! quit

Also see: Database, Hello World, Language, Programming terms