In 1969, A. Neil Pappalardo began development of MIIS, one of several proprietary implementations of MUMPS, a programming language which at the time had not been standardized.
A. Neil Pappalardo began development of MIIS. This was in 1969. MIIS were one of several proprietary implementations of MUMPS. MUMPS were a programming language. This programming language at the time had not been standardized.