Cunha, J.D.J. L. Encarnacao2015-09-292015-09-2919811017-4656https://doi.org/10.2312/eg.19811015This paper describes our experience in the development of an application using the SGL system presented in previous publications ( [2] [3] ). Special attention is paid to the pos sibilities and limitations due to GKS concepts (the SGL is implemented on top of the GKS), SGL architecture, computer confi guration and the high-level programming language (SIMULA-67) . The definition of the application and its practical use are con sidered separately.10.2312/eg.19811015