--- ray/doc/notes/ReleaseNotes	2025/06/04 20:32:24	1.491
+++ ray/doc/notes/ReleaseNotes	2025/06/19 22:36:53	1.492
@@ -2826,3 +2826,5 @@ indirect rays to transmit through alternate material t
 Thanks to Jon Sargent for finding problem and help resolving it.
 
 Added experimental C++ based rxpiece tool to default installation.
+
+Added rcomb -mt option to transpose concatenation matrix.