Teletyping is the process of transmitting messages or data over a telegraphic system. Synonyms for this term include telecommunication, telegraphy, and teleprinting. Other related words include telemessage transmission, electronic data transmission, electronic mail, and telecopying. These terms all refer to the transfer of information through electronic or telegraphic means. In the modern world, teletyping has largely been replaced by more advanced forms of communication technology, such as email and instant messaging. However, it remains an important part of history, particularly in the development of technology and communication systems.