\section{\module{tty} ---         Terminal control functions} \declaremodule{standard}{tty}  \platform{Unix}\moduleauthor{Steen Lumholt}{}\sectionauthor{Moshe Zadka}{moshez@zadka.site.co.il}\modulesynopsis{Utility functions that perform common terminal control                operations.} The \module{tty} module defines functions for putting the tty intocbreak and raw modes. Because it requires the \refmodule{termios} module, it will workonly on \UNIX. The \module{tty} module defines the following functions: \begin{funcdesc}{setraw}{fd\optional{, when}}Change the mode of the file descriptor \var{fd} to raw. If \var{when}is omitted, it defaults to \constant{termios.TCSAFLUSH}, and is passedto \function{termios.tcsetattr()}.\end{funcdesc} \begin{funcdesc}{setcbreak}{fd\optional{, when}}Change the mode of file descriptor \var{fd} to cbreak. If \var{when}is omitted, it defaults to \constant{termios.TCSAFLUSH}, and is passedto \function{termios.tcsetattr()}.\end{funcdesc}  \begin{seealso}  \seemodule{termios}{Low-level terminal control interface.}\end{seealso}