This paper describes a language that is intended to support software engineers in the development of information systems throughout the software lifecycle. This language is not a programming language. Following the example of a number of other software engineering projects, our work is based on the premise that information system development is knowledge-intensive and that the primary responsibility of any language intended to support this task is to be able to formally represent the relevant knowledge.

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Most Natural Language Processing systems use a seqnential architecture body|rig classical linguistic layers. When one works with a general language and not a sublanguage, there m'e different cases of ambiguities at different classical levels; and more particularly when one works oil complex language phenomena analysis (coordination, ell|psis, negation.