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Descriptions  are the basic syntax in Noos. Just as Prolog in based in first order (Herbrand) terms, and Lisp or Haskell are based in tex2html_wrap_inline1861 -terms, Noos is based in feature terms (cf. feature terms in Chapter 3). Descriptions are the syntax Noos uses for constructing feature terms and is based on lists (like Lisp) that start with the definegif token.

There are two main kinds of descriptions: concept descriptions, that build constant feature terms--explained in the next section--and method descriptions, that build evaluable feature terms), explained in § 2.3.

Enric Plaza
Thu Jan 23 11:36:28 MET 1997