Hypertext for hypertext: a figured thesaurus

On the basis of a heraldic encyclopedia, a hypertext has been built. The existence of an exact heraldic grammar allows a classification of the coats-of-arms, but it is not easy to be used from not skillful users, and it makes particularly critic the user interface. The constitution of a figured thesaurus, hypertext structured, allowed the realization of a concept browsing interface, which accomplish the functions of didactic and support instrument for the formulations of queries.