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The majority of information has a spatial context that can be represented in the map. For some kinds of users, the map is not only the possibility but also the necessity. In such cases it is highly important that presented information is correctly understood by the target group of users. Among these belong people with visual impairments, for which, however, the conventional map is insufficient. The number of visually impaired people increases every year and to their full-fledged integration into society is devoted...