3BSD/usr/man/man4/kl.4

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.TH KL 4 
.SH NAME
kl \- KL-11 or DL-11 asynchronous interface
.SH DESCRIPTION
The discussion of terminal I/O given in
.IR tty (4)
applies to these devices.
.PP
Since they run at a constant speed, attempts
to change the speed via
.IR stty (2)
are ignored.
.PP
The on-line console terminal is interfaced using
a KL-11 or DL-11.
By appropriate switch settings during a reboot,
UNIX will come up as a single-user system with I/O
on the console terminal.
.SH FILES
/dev/console	console
.SH "SEE ALSO"
tty(4), init(8)
.SH BUGS
Modem control for the DL-11E is not implemented.