Morse code in Cayo Largo del Sur, Cuba is coded as "UCL", and UCL in Morse code is transmitted on its radio frequency. In some countries, during periods of maintenance, the facility may radiate a T-E-S-T code () or the code may be removed which tells pilots and navigators that the station is unreliable. In Canada, the identification is removed entirely to signify the navigation aid is not to be used. In the aviation service, Morse is typically sent at a very slow speed of about 5 words per minute. In the U.S., pilots do not actually have to know Morse to
International Movement Writing Alphabet Writing Alphabet" (SSS-IMWA) to reflect its usefulness in applications beyond sign language. International Movement Writing Alphabet The International Movement Writing Alphabet (IMWA) is a set of symbols that can be used to describe and record movement. Its creator, Valerie Sutton, also invented "MovementWriting", which employs IMWA in four general application areas: SignWriting for sign language, DanceWriting as a form of dance notation, MimeWriting for classic mime, and SportsWriting for ice skating and gymnastics. The IMWA has more than 27,000 elements that are represented by unique identification numbers. Each identification number specifies six attributes——as dash-separated values. The symbol is specified with