Students can print out their own copies, at any scale and at various levels of detail, which is especially useful for digital streetmaps. The user can touch a 'key' to hear the note and press harder to hear the name of the note.
Special hardware prevents sound output while exploring the tactile sheet with several fingers.
If the user pushes down a bit harder there, then information about the bus-stop times and routes is spoken. The two-dimensional relationship between a diagram and the special musical tones is called a 'ToneScape'. The major advances over other systems lie in the easy user interface and the integration of an industry-standard graphical database and drawing system. The database system facilitates multi-lingual applications and can import directly CAD and DTP drawings or scanned images. An example usage could be the structure of a heart in a biology lesson, using a graphic imported directly from a Corel ClipArt object with the addition of extra text names.