--- ray/doc/notes/ReleaseNotes	2005/05/25 04:44:25	1.75
+++ ray/doc/notes/ReleaseNotes	2005/06/05 19:52:00	1.80
@@ -1452,3 +1452,19 @@ Increased maximum number of input pictures in pcomb an
 Created rtcontrib program for computing ray contribution coefficients.
 This tool may be used to do standard optical ray tracing or daylight
 coefficient calculations for annual simulations, among other uses.
+
+Added tilde ('~') output option as part of the -o* specification of
+rtrace.  This permits ray trees to be parsed more easily in binary
+output mode, as needed by rtcontrib.
+
+Implemented Russian roulette ray termination with -lr <= 0.
+Made -lr -10 the default in rtcontrib.
+
+Made rtcontrib -f option search RAYPATH directories.
+
+Made it so -o option of rtcontrib can pipe -o output to a command.
+
+Added -if and -of options to total for binary i/o (following rcalc mold).
+
+Switched default options in rtrace to use Russian roulette.  (Rpict and rvu
+still use biased ray termination.)