SEND AO (Abort Output) aborts the output of the last remote
    command you entered, while the command continues to execute.
    If you issue another SEND AO, the output resumes if the command
    is still executing.

    Use this command when the following conditions exist:

    o  The remote host does not recognize Ctrl/O as the flush output
       character.

    o  You want to terminate the output but not the execution of the
       process.

    DCL Format

      SEND AO

    UNIX Format

      send ao

1  –  Example

  % cd /bin
  % ls -l
  total 3464
  -rwxr-xr-x  2 root 32768 Oct 19  1996 STTY
  -rwxr-xr-x  2 root  5120 Oct 19  1996 <Ctrl/]>  (characters not
  echoed)

  TELNET> SEND AO
  ^O
  %

      During a directory listing, the TELNET escape sequence (not
      echoed to the screen) returns to TELNET prompt. The SEND AO
      command aborts the UNIX ls command.