sometimes using aquot;codeaquot; letters to avoid phonetic misunderstanding, as aquot;Z for Zebra, aquot; aquot;M for Mary, aquot; etc. The call box. ... The printing telegraph machine is used in connection with these private telegraph wires. It is electrically ... All messages may be written in plain, code or cipher language or in a combination of all three.
|Title||:||The secretary's handbook & office manual|
|Author||:||Elmer Willard Leighton|