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Depuis quelques annees, des recherches se sont interessees a la conception des systemes d'aide a la navigation et de guidage. Ceux qui existent jusqu'a ce jour presentent l'information sous differentes formes et fournissent des informations de differentes natures. L'information est parfois transmise sous forme de texte (soit par ecrit, soit diffuse oralement via un systeme vocal). Si l'information...