--- ray/doc/notes/ReleaseNotes	2020/04/13 17:12:19	1.368
+++ ray/doc/notes/ReleaseNotes	2020/05/06 14:14:57	1.369
@@ -2361,3 +2361,6 @@ deadlock on controlling process.
 
 Eliminated unnecessary start-up procedures for rtrace when only ray-casting
 is needed (i.e., no tracing or value output).
+
+Improved isotropic sampling method in bsdf2ttree using "zipper" approach
+applied in genBSDF.