--- ray/doc/notes/ReleaseNotes	2021/12/14 02:33:18	1.400
+++ ray/doc/notes/ReleaseNotes	2022/03/07 17:55:09	1.403
@@ -2501,3 +2501,16 @@ discovered and reported by Jon Sargent.
 
 Created checkBSDF tool to test XML BSDF reciprocity and perform similar
 sanity checks.
+
+Added -O option to pvalue and pextrem to report watts/sr/m^2 even if
+picture is XYZE.
+
+Made subtle changes to header i/o routines to preserve alignment in
+binary file formats to enable memory-mapping.  Implemented memory-mapped
+matrix loading in rmtxop for binary double files.
+
+Removed ambient value sorting, which was written when ambient caches
+could overwhelm available memory.  This is rarely the case these days,
+and the added code complexity and updating of cache values with LRU
+counts dirties pages that would otherwise remain clean, so it was
+often a loss even when VM was an issue.