The software facilitates either the overview of a subject area or to find a specific information. After having selected the language first the environment or generic element (from 26) should be selected (e.g. bathroom, ramp) - the user will see all information on this topic. It is possible to select a trade (from 18), eg. bricklayer, plumber - the user will see the specific information, related to the given trade. Selecting a disability, e.g. ambulant disabled, a very specific information is available, e.g. what should be done by a plumber in a bathrom for ambulant disabled. Selecting environment and disability only, the user see, what are the needs of a specific group, e.g. blind people in general.