Initialize a terminal. The terminal to be initialized is whichever is found first from the value of terminal, the value of the TERM environment variable, or the default terminal type. See also the reset command.
Set the erase character to char.
Set the interrupt character to char.
Do not send terminal or tab initialization strings to the terminal.
Set line-kill character to char.
Specify a mapping from a port type to a terminal, where arg looks like this: