International Community for Auditory Display

ICAD (Corporate history: ICAD, Inc., Concentra, KTI, Dassault Systemes) was a Knowledge-Based Engineering (KBE) system that was based upon the Lisp programming language. ICAD had an open architecture that can utilize all the power and flexibility of the underlying language.

KBE, as implemented via ICAD, received a lot of attention due to the remarkable results that appeared to take little effort.[citation needed] ICAD allowed one example of end-user computing
that in a sense is unparalleled. Most ICAD developers were degreed
engineers. Systems developed by ICAD users were non-trivial and
consisted of highly complicated code. In the sense of end-user computing,
ICAD was the first to allow the power of a domain tool to be in the
hands of the user at the same time being open to allow extensions as
identified and defined by the domain expert or SME.

Source: wikipedia.org : writing a resume