Paper thus remains the main knowledge sharing medium.
The progressive substitution of paper by electronic media certainly improves the situation by offering direct and easy access to huge volumes of scattered sources. The increasing number of W3 genomic information servers clearly confirms these advantages. Incremental and concurrent building of formal knowledge bases is presented hereafter as an efficient, still potential, alternative. In this context, the first role of a knowledge base is to be an explicit and formalised model of the knowledge on a domain. A class gathers the generic knowledge over a set of potential instances.