--- ray/doc/notes/ReleaseNotes	2021/02/15 23:22:50	1.384
+++ ray/doc/notes/ReleaseNotes	2021/03/27 17:50:18	1.389
@@ -2415,5 +2415,17 @@ well-constructed geometry.
 
 Added "-s up" option to pabopto2bsdf to allow for 180 degree symmetry,
 meaning that data repeats after 180 degree rotation (as distinguished
-from "-s bilateral" that is mirrored about a vertical plane).  Thanks
-to Helen Rose for the suggestion and informing me that such a thing exists.
+from "-s bilateral" whose data is mirrored about a vertical plane).
+Thanks to Helen Rose Wilson for the suggestion and informing me that
+such a thing exists.
+
+Removed upper limit on number of modifiers in rcontrib.
+
+Put cap on maximum ambient gradient to avoid over-extrapolation of
+poorly computed irradiance cache values.
+
+Added robjutil +T option to triangulate all faces in .OBJ description.
+
+Altered BSDF library to have both front and back diffuse transmittance
+values, which can be different.  This was necessary to avoid issues
+caused by measurement and modeling discrepancies.