Measuring the thickness of the Magellanic Cloud Cepheid population: Implications for Microlensing

This paper presents group discussions taking place within multidisciplinary topical network 33 of the CNRS Information and Communication Science and Technology (STIC) Department. It attempts to clarify the concept of document in its transtion to electronic form, based on research which tends to privilege form (as a material or immaterial object), sign (as meaningful object) or medium (as communication vector). Each of these terms reflects the radical transformations that are taking place. Their superposition stresses the importance of multidisciplinarity for a lucid and complete analysis of the concept and how it is changing.