Programming languages, or computer languages, were used by programmers to write computer codes.
Melanie Bush was an expert at programming in FORTRAN, COBOL and BASIC. (AUDIO: The Juggernauts, Spaceport Fear)
While looking at the Narcissus' source code, Petronella Osgood noted that it looked like a combination of HTML, CSS, JavaScript and PHP. (AUDIO: Narcissus)