Minor update to bcm docs

hardbyte · hardbyte · commit 2e734b2a9f23 · 2018-09-17T12:41:30.000+10:00
diff --git a/doc/bcm.rst b/doc/bcm.rst
@@ -1,3 +1,5 @@
+.. _bcm:
+
 Broadcast Manager
 =================
 
diff --git a/doc/bus.rst b/doc/bus.rst
@@ -11,8 +11,7 @@ class, for example::
     vector_bus = can.Bus(interface='vector', ...)
 
 That bus is then able to handle the interface specific software/hardware interactions
-and implements the :class:`~can.BusABC` API. It itself is an instance of ``VectorBus``,
-but these specififc buses should not be instantiated directly.
+and implements the :class:`~can.BusABC` API.
 
 A thread safe bus wrapper is also available, see `Thread safe bus`_.
 
@@ -35,8 +34,9 @@ API
 Transmitting
 ''''''''''''
 
-Writing to the bus is done by calling the :meth:`~can.BusABC.send` method and
-passing a :class:`~can.Message` instance.
+Writing individual messages to the bus is done by calling the :meth:`~can.BusABC.send` method
+and passing a :class:`~can.Message` instance. Periodic sending is controlled by the
+:ref:`broadcast manager <bcm>`.
 
 
 Receiving
