diff --git a/man/curs_extend.3x b/man/curs_extend.3x
index 9a52f93..01cf9d2 100644
--- a/man/curs_extend.3x
+++ b/man/curs_extend.3x
@@ -1,5 +1,6 @@
 .\"***************************************************************************
-.\" Copyright (c) 1999-2006,2010 Free Software Foundation, Inc.              *
+.\" Copyright 2018-2023,2024 Thomas E. Dickey                                *
+.\" Copyright 1999-2010,2016 Free Software Foundation, Inc.                  *
 .\"                                                                          *
 .\" Permission is hereby granted, free of charge, to any person obtaining a  *
 .\" copy of this software and associated documentation files (the            *
@@ -28,29 +29,42 @@
 .\"
 .\" Author: Thomas E. Dickey 1999-on
 .\"
-.\" $Id: curs_extend.3x,v 1.19 2010/12/04 18:36:44 tom Exp $
-.TH curs_extend 3X ""
+.\" $Id: curs_extend.3x,v 1.46 2024/03/16 15:35:01 tom Exp $
+.TH curs_extend 3X 2024-03-16 "ncurses @NCURSES_MAJOR@.@NCURSES_MINOR@" "Library calls"
+.ie \n(.g \{\
+.ds `` \(lq
+.ds '' \(rq
+.\}
+.el \{\
+.ie t .ds `` ``
+.el   .ds `` ""
+.ie t .ds '' ''
+.el   .ds '' ""
+.\}
 .SH NAME
-\fBcurses_version\fP,
-\fBuse_extended_names\fP \- miscellaneous curses extensions
-.
+\fB\%curses_version\fP,
+\fB\%use_extended_names\fP \-
+miscellaneous \fIcurses\fR extensions
 .SH SYNOPSIS
-\fB#include <curses.h>\fP
-.sp
-\fBconst char * curses_version(void);\fP
-.br
-\fBint use_extended_names(bool enable);\fP
+.nf
+\fB#include <curses.h>
+.PP
+\fBconst char * curses_version(void);
+\fBint use_extended_names(bool \fIenable\fP);
+.fi
 .SH DESCRIPTION
 These functions are extensions to the curses library
 which do not fit easily into other categories.
-.PP
-Use
-.I curses_version()
-to get the version number, including patch level of the library, e.g.,
-.B 5.0.19991023
-.PP
-The
-.I use_extended_names()
+.SS curses_version
+Use \fBcurses_version\fP
+to get the version number, including patch level of the library,
+prefixed by \*(``ncurses\*('', e.g.,
+.RS
+.sp
+.B ncurses 5.0.19991023
+.RE
+.SS use_extended_names
+The \fBuse_extended_names\fP
 function controls whether the calling application
 is able to use user-defined or nonstandard names
 which may be compiled into the terminfo
@@ -60,20 +74,35 @@
 extended terminal definitions.
 However you can disable this feature
 to ensure compatibility with other implementations of curses.
+.SH RETURN VALUE
+\fBcurses_version\fP returns a pointer to static memory; you should not free
+this in your application.
+.PP
+\fBuse_extended_names\fP returns the previous state, allowing you to
+save this and restore it.
+.SH EXTENSIONS
+These functions are \fB\%ncurses\fP(3X) extensions,
+and are not found in SVr4
+.IR curses ,
+4.4BSD
+.IR curses ,
+or any other previous curses implementation.
 .SH PORTABILITY
-These routines are specific to ncurses.  They were not supported on
-Version 7, BSD or System V implementations.  It is recommended that
-any code depending on them be conditioned using NCURSES_VERSION.
-.SH SEE ALSO
-\fBcurs_getch\fR(3X),
-\fBcurs_mouse\fR(3X),
-\fBcurs_print\fR(3X),
-\fBcurs_util\fR(3X),
-\fBdefault_colors\fR(3X),
-\fBdefine_key\fR(3X),
-\fBkeybound\fR(3X),
-\fBkeyok\fR(3X),
-\fBresizeterm\fR(3X),
-\fBwresize\fR(3X).
-.SH AUTHOR
+Applications employing
+.I \%ncurses
+extensions should condition their use on the visibility of the
+.B \%NCURSES_VERSION
+preprocessor macro.
+.SH AUTHORS
 Thomas Dickey.
+.SH SEE ALSO
+\fB\%curs_getch\fP(3X),
+\fB\%curs_mouse\fP(3X),
+\fB\%curs_print\fP(3X),
+\fB\%curs_util\fP(3X),
+\fB\%default_colors\fP(3X),
+\fB\%define_key\fP(3X),
+\fB\%keybound\fP(3X),
+\fB\%keyok\fP(3X),
+\fB\%resizeterm\fP(3X),
+\fB\%wresize\fP(3X)