The use of a single luxury image (not the book) because not only are the only books that can only communicate with each other. For example, the use of these symbols, the use of sign language to talk to the shift of people with hearing problems.
Using the symbols look (not literally) not only text only. You can only communicate these things as the use of symbols. Using sign language I talk to people with hearing problems.
The use of sticking into (not words), because not only the text only. To be able to communicate only these things, such as the use of symbols, language to communicate with people with hand problems in hearing.