Comment by jasomill

Also immortalized as the name of the "gecos" field in the UNIX passwd(5) file, described in the v7 man page[1] as "GCOS job number, box number, optional GCOS user-id" (GCOS = GECOS after the Honeywell acquisition).

[1] https://man.freebsd.org/cgi/man.cgi?query=passwd&apropos=0&s...