During a session with a remote host, you can toggle between
    the local TELNET or TN3270 process and the connected host. For
    example, at the TELNET prompt, you might want to display status,
    modify a TELNET parameter, or spawn a DCL subprocess.

    o  To return to the local TELNET or TN3270 prompt (TELNET command
       mode), enter the TELNET escape sequence (the default is
       Ctrl/]) at the remote host's prompt (TELNET input mode).

    o  To resume your session with the remote host, enter one of the
       following at the TELNET (or TN3270) prompt.

       TELNET> <Return>

       or

       TELNET>  RESUME

       or

       TELNET> RESUME n

       where n is the number of the session to which you want to
       return.

    o  To change the default escape sequence, enter the following at
       the TELNET (or TN3270) prompt:

       TELNET> SET ESCAPE "^escape_character"