After establishing a connection, the .telnetrc file in the user's home directory is opened. Blank lines are ignored. Lines that begin without empty spaces are the start of a machine entry. The first thing on the line is the name of the machine to which the user is connected. Multiple arguments are separated by spaces.
Prints help information for the send subcommand.
This sequence is sent as TCP urgent data. The unset com- mand disables or sets to false any of the specified functions. The values of variables can be queried with the display subcommand. The variables that can be set or unset, but not toggled, are listed here. Local echo is used for normal processing, while suppress- ing the echo is used for entering text that should not appear on the display, such as passwords.