% mail <Ctrl/]> (characters not echoed)
  TELNET> SEND EC <Return>
  Mail $Revision 4.2.4.2 $  Type ? for help.
  "/usr/spool/mail/debts": 1 message 1 new
  >N  1 debts  Tue Sep 15 13:39  8/161  "Team Building"
  &

      This example:

      o  Misspells the UNIX mail command.

      o  Enters the TELNET escape sequence (not echoed to the screen)
         to return to the TELNET prompt.

      o  Enters the TELNET SEND EC command, which deletes the last
         character typed (l) and returns to the remote host.