Morse code thus determines the dot length. It is common to assume that a word is 5 characters long. There are two common typical words: "PARIS" and "CODEX". PARIS mimics a word rate that is typical of natural language words and reflects the benefits of Morse code's shorter code durations for common characters such as "e" and "t". CODEX offers a word rate that is typical of 5-letter code groups (sequences of random letters). Using the word PARIS as a standard, the number of dot units is 50 and a simple calculation shows that the dot length at 20 words per minute
Standard Arabic Technical Transliteration System (ي) and 'alif maksūrah (ى), and it cannot depict an 'alif maddah ( آ ). Satts can also not distinguish between a final seated hamza and a final independent hamza, if the word ends in "AE", "IE", or "WE". The Latin alphabetic letter employed for each Arabic letter in the SATTS system is its Morse-code equivalent. For example, Morse code for the Arabic letter ţā' (ط) is • • — (dit-dit-dah). That same Morse code sequence represents the letter U in the Latin alphabet. Hence the SATTS equivalent for ţā' is U. In the Morse-code era, when Arabic language Morse