doc/go1.3.html: explain the change to the memory model
LGTM=iant, rsc
R=rsc, iant, mtj
CC=golang-codereviews
https://golang.org/cl/80260044
diff --git a/doc/go1.3.html b/doc/go1.3.html
index 5d21ed6..60861fb 100644
--- a/doc/go1.3.html
+++ b/doc/go1.3.html
@@ -46,11 +46,12 @@
<h2 id="memory">Changes to the memory model</h2>
<p>
-TODO:
-early go documentation suggested using a channel as a semaphore like this: (previous example).
-the go memory model has been updated to make explicit that this idiom is allowed. (new example).
-the previous example is also correct, just requiring needless func init work.
-(CL 75130045)
+The Go 1.3 memory model <a href="https://codereview.appspot.com/75130045">adds a new rule</a>
+concerning sending and receiving on buffered channels,
+to make explicit that a buffered channel can be used as a simple
+semaphore, using a send into the
+channel to acquire and a receive from the channel to release.
+This is not a language change, just a clarification about an expected property of communication.
</p>
<h2 id="impl">Changes to the implementations and tools</h2>
