When Bell Labs pulled out of the Multics project, he adapted the code from Multics to a Fortran program so that it could run on the GECOS operating system already present on the GE 635.
Když Bell Labs upustili od projektu Multics, portoval kód z Multics k programu Fortran tak, aby mohl běžet na operačním systému GECOS a již na GE 635.