Index: head/share/man/man4/snp.4
===================================================================
--- head/share/man/man4/snp.4	(revision 6782)
+++ head/share/man/man4/snp.4	(revision 6783)
@@ -1,67 +1,67 @@
 .\"
-.\"  $Id: snp.4,v 1.4 1995/02/25 20:15:20 pst Exp $
-.\"  $Source: /a/ncvs/src/share/man/man4/snp.4,v $
+.\"  $Id: snp.4,v 1.5 1995/02/27 19:45:57 ugen Exp $
+.\"  $Source: /home/ncvs/src/share/man/man4/snp.4,v $
 .\"
 .Dd February 24, 1995
 .Dt SNP 4
 .Os FreeBSD
 .Sh NAME
 .Nm snp
 .Nd tty snoop interface
 .Sh SYNOPSIS
 .Fd #include <sys/ioctl.h>
 .Fd #include <sys/snoop.h>
 .Ft int
 .Fn ioctl fd SNPSTTY &dev
 .Ft int
 .Fn ioctl fd SNPGTTY &dev
 .Ft int
 .Fn ioctl fd FIONREAD &result
 .Sh DESCRIPTION
 /dev/snp? are snoop devices which allow user to attach to any tty
 and watch activities on it.
 
 To associate a given
 .Nm snp
 device with a tty to be observed,  open the
 .Nm snp
 device and then use the SNPSTTY ioctl.
 The argument passed to the IOCTL is the address of a variable of type
 dev_t.
 By setting the value of the variable pointed to to -1, the user may detach
 the snp device from a tty.
 .Pp
 The SNPGTTY ioctl returns information about the current tty attached to
 the open
 .Nm snp
 device.
 .Pp
 The FIONREAD ioctl returns a positive value equal to the number of characters
 in a read buffer.
 Special values defined are:
 .Bl -tag -width SNP_TTYCLOSE
 .It Dv SNP_OFLOW
 device overflow occured, device detatched.
 .It Dv SNP_TTYCLOSE
 tty not attached.
 .It Dv SNP_DETACH
 .Nm snp
 device has been detatched by user or tty device has been closed
 and detatched.
 .Sh SEE ALSO
 .Xr watch 8 ,
 .Xr pty 4 ,
 .Xr sio 4
 .Sh RESTRICTIONS
 Only the superuser may access the
 .Nm snp
 devices.
 .Sh BUGS
 While in line mode, user input can't be seen.
-No signals to the application on tty possible (i.e. Ctrl+C).
+No signals may be sent to the observed tty.
 .Sh AUTHOR
 Ugen J.S. Antsilevich <ugen@NetVision.net.il>
 .Sh HISTORY
 The
 .Nm snp
 device first appeared in FreeBSD 2.1.