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+.TH NEWTTY 4
+.UC 4
+.SH NAME
+newtty \- summary of the ``new'' tty driver
+.SH SYNOPSIS
+.B "stty new"
+.PP
+.B "stty new crt"
+.SH DESCRIPTION
+This is a summary of the new tty driver, described completely, with the
+old terminal driver, in
+.IR tty (4).
+The new driver is largely compatible with the old but provides additional
+functionality for job control.
+.LP
+.B "CRTs and printing terminals."
+.LP
+The new terminal driver acts differently on CRTs and on printing terminals.
+On CRTs at speeds of 1200 baud or greater it normally erases input characters
+physically with backspace-space-backspace when they are erased logically;
+at speed under 1200 baud this is often unreasonably slow, so the cursor
+is normally merely moved to the left.  This is the behavior when you say
+\*(lqstty new crt\*(rq; to have the tty driver always erase the characters say
+\*(lqstty new crt crterase crtkill\*(rq,
+to have the characters remain even at 1200
+baud or greater say \*(lqstty new crt \-crterase \-crtkill\*(rq.
+.LP
+On printing terminals the command \*(lqstty new prterase\*(rq should be given.
+Logically erased characters are then echoed printed backwards
+between a `\e' and an `/' character.
+.LP
+Other terminal modes are possible, but less commonly used; see
+.IR tty (4)
+and
+.IR stty (1)
+for details.
+.LP
+.B "Input editing and output control."
+.PP
+When preparing input the character #
+(normally changed to ^H using
+.IR stty (1))
+erases the last input character,
+\&^W the last input word, and the character @
+(often changed to ^U)
+erases the entire current input
+line.  A ^R character causes the pending input to be retyped.
+Lines are terminated by a return or a newline; a ^D at the beginning
+of a line generates an end-of-file.
+.PP
+Control characters echo as ^x when typed, for some x; the delete character
+is represented as ^?.
+.PP
+The character ^V may be typed before
+.I any
+character so that it may be entered without its special effect.
+For backwards compatibility with the old tty driver the character `\e'
+prevents the special meaning of the character and line erase characters,
+much as ^V does.
+.LP
+Output is suspended when a ^S character is typed and resumed when a ^Q
+character is type.  Output is discarded after a ^O character is typed
+until another ^O is type, more input arrives, or the condition is cleared
+by a program (such as the shell just before it prints a prompt.)
+.PP
+.B "Signals."
+.PP
+A non-interactive program is interrupted by a ^? (delete); this character
+is often reset to ^C using
+.IR stty (1).
+A quit ^\e character causes programs to terminate like
+^? does, but also causes a \fIcore\fR image file to be created which
+can then be examined with a debugger.  This is often used to stop runaway
+processes.
+Interactive programs often catch interrupts and return to their command
+loop; only the most well debugged programs catch quits.
+.PP
+Programs may be stopped by hitting ^Z, which returns control to the shell.
+They may then be resumed using the job control mechanisms of the shell,
+i.e. the
+.I fg
+(foreground) command.
+The character ^Y is like ^Z but takes effect when read rather then when
+typed; it is much less frequently used.
+.PP
+See
+.IR tty (4)
+for a more complete description of the new terminal driver.
+.SH "SEE ALSO"
+csh(1), newcsh(1), stty(1), tty(4)