The message command sets X.3 parameters 2, 4, 10 and 15.
The effect of this is that the pad program echoes the characters you type and handles line-editing. This is the most appropriate type of echoing to use when you are using the operating system functions of the remote host. Using the pad to handle echoing and line-editing minimizes the burden placed on the network and the remote host.
Enter message without a parameter to change to message mode.