UN-LEND: Un Lenguaje para la Especificación de Modelos de UN-MetaCASE

CASE tools have contributed to model building for representing several aspects of a problem, for converting it in source code of a software piece; however, these tools have limited capacity in the amount of type models they can elaborate. Some years ago researchers have been developing MetaCASE tools, e.g. AToM and DOME. Models in this kind of tools aren’t defined; instead of, models are built in a graphic or textual formalism, supported in a language for modeling syntax expression and graphic representation. In this paper, we present UN-LEND, a language created by UN-INFO research group for UN-MetaCASE model specification; this language torn apart model logic from graphic representation, for facilitating multiple view usage of the same model.