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Index: head/share/man/man4/linux.4
===================================================================
--- head/share/man/man4/linux.4
+++ head/share/man/man4/linux.4
@@ -139,6 +139,7 @@
.El
.Sh SEE ALSO
.Xr brandelf 1 ,
+.Xr pty 4 ,
.Xr elf 5 ,
.Xr fdescfs 5 ,
.Xr linprocfs 5 ,
Index: head/share/man/man4/pty.4
===================================================================
--- head/share/man/man4/pty.4
+++ head/share/man/man4/pty.4
@@ -27,19 +27,21 @@
.\"
.\" $FreeBSD$
.\"
-.Dd August 20, 2008
+.Dd October 28, 2019
.Dt PTY 4
.Os
.Sh NAME
.Nm pty
-.Nd BSD-style and System V-style compatibility pseudo-terminal driver
+.Nd old-style compatibility pseudo-terminal driver
.Sh SYNOPSIS
.Cd "device pty"
.Sh DESCRIPTION
The
.Nm
driver provides support for the traditional BSD naming scheme that was
-used for accessing pseudo-terminals.
+used for accessing pseudo-terminals before it was replaced by
+.Xr pts 4 .
+This traditional naming is still used in Linux.
When the device
.Pa /dev/ptyXX
is being opened, a new terminal shall be created with the
@@ -59,7 +61,8 @@
It is only provided for compatibility with older C libraries
that tried to open such devices when
.Xr posix_openpt 2
-was being called.
+was being called,
+and for running Linux binaries.
.Sh FILES
The BSD-style compatibility pseudo-terminal driver uses the following
device names:

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