reverse associativity on R ops

This seems slightly less unintuitive than the old semantics.

S03-operators.pod

@@ -8,8 +8,8 @@ Synopsis 3: Operators
 
     Created: 8 Mar 2004
 
-    Last Modified: 17 Jan 2015
-    Version: 284
+    Last Modified: 29 Mar 2015
+    Version: 285
 
 =head1 Overview
 
@@ -4185,13 +4185,14 @@ by prefixing with C<R>.  For instance, to do reversed comparisons:
     R<=>
 
 The precedence of any reversed operator is the same as the base operator.
-The associativity is I<not> reversed, so
+The associativity, however, is reversed, so
 
-    [R-] 1,2,3   # produces 2 from 3 - (2 - 1)
+    [R-] 1,2,3   # produces 0 from 3 - 2 - 1
+    [R**] 2,3,4   # produces 262144 from 4 ** 3 ** 2
 
-To get the other effect in a reduce, reverse the list:
-
-    [-] reverse 1,2,3  # produces 0
+Using both left and right associativity at the same precedence level is
+not prohibited, but is likely to drive you mad, unless of course you were
+mad in the first place, which seems almost a certainty by this point.
 
 =head2 Hyper operators