--- ray/README.txt	2020/09/03 15:46:32	1.7
+++ ray/README.txt	2022/08/21 16:20:42	1.8
@@ -1,32 +1,33 @@
-		RCSid "$Id: README.txt,v 1.7 2020/09/03 15:46:32 greg Exp $"
+		RCSid "$Id: README.txt,v 1.8 2022/08/21 16:20:42 greg Exp $"
 
 Hello and welcome to the Radiance synthetic imaging system.  This is
 the twenty-fifth release, Version 5.4, and it includes all source files
 for local compilation with a standard C compiler.  To find out what's
 new in this release, check the text file "doc/notes/ReleaseNotes".
 
-Radiance is OpenSource software copyrighted and distributed by
+Radiance is open source software copyrighted and distributed by
 Lawrence Berkeley National Laboratory in California.  By downloading
 and installing this software, you are implicitly agreeing to the
-OpenSource license appended to this README file.  Please read it
-carefully before proceeding -- this is very different from previous
-licenses, and contains fewer restrictions on commercialization.
+copyright appended to this README file, and the license agreement (License.txt)
+in the same directory.  Please read both carefully before proceeding.
 
 Please read this entire file before sending e-mail asking
 how to install this software or what to do with it.  Some
 frequently asked questions are answered here and also on our
 website at:
 
-	http://radsite.lbl.gov/radiance/
+	https://www.radiance-online.org/
 
 The CVS source tree is available, including post-release bug-fixes and
 mailing lists access at:
 
-	http://www.radiance-online.org/
+	https://www.radiance-online.org/download-install/CVS%20source%20code
 
-The websites above should also have some precompiled Radiance binaries
-and add-ons for common Unix platforms.
+The website below has some precompiled Radiance binaries
+and add-ons for common Unix platforms:
 
+	https://www.radiance-online.org/download-install/installation-information
+
 We have attempted to make it easy for you (and for us) to install
 the software on differently configured systems using a global make
 script.  To install the software, just type:
@@ -50,7 +51,7 @@ run the following command to install the library files
 
 	./makeall library
 
-The makeall may script ask you questions about your system and where you
+The makeall script may ask you questions about your system and where you
 want to install the executables and library files.  The pathnames you
 give should be relative to root for the programs to work properly.  You
 may also use the tilde ('~') character to give paths starting with
@@ -76,6 +77,10 @@ A PDF version of this manual may be found in
 "doc/pdf/ray.pdf", along with an older tutorial by Cindy Larson,
 "doc/pdf/raduser1_6.pdf".
 
+To check that everything is peforming correctly, you can run:
+
+	./makeall test
+
 For complete documentation on the system as of release 3.1, refer to
 "Rendering with Radiance" by Larson and Shakespeare, which used to be
 available from Morgan Kauffman Publishing.  Recently, the authors have
@@ -119,3 +124,21 @@ There is a user interface built on top of this using T
 If you do not have Tcl/Tk installed on your system, you must do so prior
 to building this distribution if you want trad to install.  (Try a google
 search on "Tcl/Tk" or go to "http://www.scriptics.com/software/tcltk/".)
+
++++++++++++++++++ COPYRIGHT NOTICE +++++++++++++++++
+
+Radiance v5.4 Copyright (c) 1990 to 2022, The Regents of the University of 
+California, through Lawrence Berkeley National Laboratory (subject to receipt 
+of any required approvals from the U.S. Dept. of Energy).  All rights reserved.
+
+If you have questions about your rights to use or distribute this software,
+please contact Berkeley Lab's Intellectual Property Office at
+IPO@lbl.gov.
+
+NOTICE.  This Software was developed under funding from the U.S. Department
+of Energy and the U.S. Government consequently retains certain rights.  As
+such, the U.S. Government has been granted for itself and others acting on
+its behalf a paid-up, nonexclusive, irrevocable, worldwide license in the
+Software to reproduce, distribute copies to the public, prepare derivative 
+works, and perform publicly and display publicly, and to permit others to do so.
+