-RMR based applications. The *max_msg_size* parameter is used
-to allocate receive buffers and is the maximum message size
-which the application expects to receive. This value is the
-sum of **both** the maximum payload size **and** the maximum
-trace data size. This value is also used as the default
-message size when allocating message buffers. Messages
-arriving which are longer than the given maximum will be
-dropped without notification to the application. A warning is
-written to standard error for the first message which is too
-large on each connection.
+RMR based applications. The *norm_msg_size* parameter is used
+to allocate receive buffers and should be set to what the
+user application expects to be a size which will hold the
+vast majority of expected messages. When computing the size,
+the application should consider the usual payload size
+**and** the maximum trace data size that will be used. This
+value is also used as the default message size when
+allocating message buffers (when a zero size is given to
+rmr_alloc_msg(); see the rmr_alloc_msg() manual page).
+Messages arriving which are longer than the given normal size
+will cause RMR to allocate a new buffer which is large enough
+for the arriving message.
+
+Starting with version 3.8.0 RMR no longer places a maximum
+buffer size for received messages. The underlying system
+memory manager might impose such a limit and the attempt to
+allocate a buffer larger than that limit will likely result
+in an application abort. Other than the potential performance
+impact from extra memory allocation and release, there is no
+penality to the user programme for specifyning a normal
+buffer size which is usually smaller than received buffers.
+Similarly, the only penality to the application for over
+specifying the normal buffer size might be a larger memory
+footprint.