--- AnyEvent/README	2015/05/02 14:39:31	1.74
+++ AnyEvent/README	2016/09/17 02:33:54	1.77
@@ -814,8 +814,8 @@
         "croak" have been called.
 
     $cb = $cv->cb ($cb->($cv))
-        This is a mutator function that returns the callback set and
-        optionally replaces it before doing so.
+        This is a mutator function that returns the callback set (or "undef"
+        if not) and optionally replaces it before doing so.
 
         The callback will be called when the condition becomes "true", i.e.
         when "send" or "croak" are called, with the only argument being the
@@ -823,6 +823,10 @@
         callback is called immediately when it is set. Calling "recv" inside
         the callback or at any later time is guaranteed not to block.
 
+        Additionally, when the callback is invoked, it is also removed from
+        the condvar (reset to "undef"), so the condvar does not keep a
+        reference to the callback after invocation.
+
 SUPPORTED EVENT LOOPS/BACKENDS
     The available backend classes are (every class has its own manpage):
 
@@ -1032,6 +1036,10 @@
         function, which can reduce typing, codesize and can reduce the
         logging overhead enourmously.
 
+    AnyEvent::fh_block $filehandle
+    AnyEvent::fh_unblock $filehandle
+        Sets blocking or non-blocking behaviour for the given filehandle.
+
 WHAT TO DO IN A MODULE
     As a module author, you should "use AnyEvent" and call AnyEvent methods
     freely, but you should not load a specific event module or rely on it.
@@ -1606,7 +1614,7 @@
           ...
        });
 
-       EV::loop;
+       EV::run;
 
     3b. The module user could use AnyEvent, too: