diff --git a/lib/libc/net/gai_strerror.3 b/lib/libc/net/gai_strerror.3
index 2af665a86bf2..7c5503026ed1 100644
--- a/lib/libc/net/gai_strerror.3
+++ b/lib/libc/net/gai_strerror.3
@@ -1,6 +1,5 @@
 .\"	$KAME: gai_strerror.3,v 1.1 2005/01/05 03:04:47 itojun Exp $
 .\"	$OpenBSD: gai_strerror.3,v 1.4 2004/12/20 23:04:53 millert Exp $
-.\"	$FreeBSD$
 .\"
 .\" Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
 .\" Copyright (C) 2000, 2001  Internet Software Consortium.
@@ -17,6 +16,8 @@
 .\" OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 .\" PERFORMANCE OF THIS SOFTWARE.
 .\"
+.\" $FreeBSD$
+.\"
 .Dd December 20, 2004
 .Dt GAI_STRERROR 3
 .Os
@@ -24,9 +25,9 @@
 .Nm gai_strerror
 .Nd get error message string from EAI_xxx error code
 .Sh SYNOPSIS
-.Fd #include <sys/types.h>
-.Fd #include <sys/socket.h>
-.Fd #include <netdb.h>
+.In sys/types.h
+.In sys/socket.h
+.In netdb.h
 .Ft "const char *"
 .Fn gai_strerror "int ecode"
 .Sh DESCRIPTION
@@ -39,9 +40,9 @@ or
 .Xr getnameinfo 3 .
 .Pp
 The following error codes and their meaning are defined in
-.Aq Pa netdb.h :
+.In netdb.h :
 .Pp
-.Bl -tag -width "EAI_ADDRFAMILYXX" -offset indent -compact
+.Bl -tag -width ".Dv EAI_BADFLAGS" -offset indent -compact
 .It Dv EAI_AGAIN
 temporary failure in name resolution
 .It Dv EAI_BADFLAGS
@@ -54,7 +55,7 @@ invalid value for
 non-recoverable failure in name resolution
 .It Dv EAI_FAMILY
 .Fa ai_family
-not supported.
+not supported
 .It Dv EAI_MEMORY
 memory allocation failure
 .It Dv EAI_NONAME
@@ -76,7 +77,9 @@ system error returned in
 .Va errno
 .El
 .Sh RETURN VALUES
+The
 .Fn gai_strerror
+function
 returns a pointer to the error message string corresponding to
 .Fa ecode .
 If
diff --git a/lib/libmd/sha.3 b/lib/libmd/sha.3
index 69a1354f7ecc..f4e2f192b539 100644
--- a/lib/libmd/sha.3
+++ b/lib/libmd/sha.3
@@ -157,7 +157,8 @@ argument is non-null it must point to at least 41 characters of buffer space.
 .Xr md2 3 ,
 .Xr md4 3 ,
 .Xr md5 3 ,
-.Xr ripemd 3
+.Xr ripemd 3 ,
+.Xr sha256 3
 .Sh HISTORY
 These functions appeared in
 .Fx 4.0 .
diff --git a/lib/libthr/libthr.3 b/lib/libthr/libthr.3
index 2133ccb78152..356edd903006 100644
--- a/lib/libthr/libthr.3
+++ b/lib/libthr/libthr.3
@@ -48,14 +48,18 @@ as they can then use
 .Xr libmap.conf 5
 to select the threading implementation on a per-application basis.
 .Pp
+The
 .Nm
+library
 has been optimized for use by applications expecting system scope thread
 semantics, and can provide significant performance improvements.
 .Sh SEE ALSO
-.Xr pthread 3 ,
+.Xr pthread 3
 .Sh AUTHORS
 .An -nosplit
+The
 .Nm
+library
 was originally created by
 .An "Jeff Roberson" Aq jeff@FreeBSD.org ,
 and enhanced by
@@ -64,4 +68,3 @@ and
 .An "Mike Makonnen" Aq mtm@FreeBSD.org .
 It has been substantially rewritten and optimized by
 .An "David Xu" Aq davidxu@FreeBSD.org .
-.An -split