MUMPS
From VistApedia
MUMPS is the programming language used for VistA.
There are several implementations of MUMPS:
Any program written in MUMPS that is stated as being written in Standard MUMPS must conform to the ANSI X11 standard for the language.
Any implementation of MUMPS that is to be qualified as Standard MUMPS must conform to the ANSI X11 standard for the language.