For those that do not, pressing returns you to the remote session. If telnet is issued with arguments, it performs an open subcommand with those arguments, then enters input mode. When input editing or character echoing is to be disabled, the remote system relays that information. The remote system also relays changes to any special characters that happen on the remote system, so that they can take effect on the local system. This is also true for the arguments to the mode, set, toggle, unset, slc, and display commands.
Requests help on telnet.
Without arguments, telnet prints a help sum- mary. If a subcommand is specified, telnet prints help information for just that subcommand. Any variables defined by this command are automatically exported. The remote host is asked for permission to go into the requested mode. Prints out help information for the mode command.