diff --git a/INSTALL b/INSTALL
index 426c61d..6f0d9d5 100644
--- a/INSTALL
+++ b/INSTALL
@@ -41,6 +41,13 @@ Preliminary Mininet Installation/Configuration Notes
     insmod /home/openflow/openflow/datapath/linux-2.6/ofdatapath.ko 
     modprobe tun
 
+- The default OpenFlow controller (controller(8)) only supports 16
+  switches! If you wish to run a network with more than 16 switches,
+  please recompile controller(8) with larger limits, or use a different
+  controller such as nox. (At the moment, unfortunately, it's not
+  easy to do so without modifying mininet.py. This will be improved
+  upon, and an example provided, in the future.)
+  
 - For scalable configurations, you might need to increase some of your
   kernel limits. For example, you could add something like the following
   to /etc/sysctl.conf (modified as necessary for your desired 
diff --git a/README b/README
index 028ac47..7b58862 100644
--- a/README
+++ b/README
@@ -46,10 +46,17 @@ Currently mininet includes:
 	
 - A simple command-line interface which may be invoked on a network using
   .run( Cli )
-	
+
+- A 'cleanup' script to get rid of junk (interfaces, processes, etc.)
+  which might be left around by mininet. Try this if things stop
+  working.
+  
 - Examples (in examples/ directory) to help you get started.
 
-Some preliminary installation notes are included in the INSTALL file.
+Batteries are not included (yet!) 
+
+However, some preliminary installation notes are included in the INSTALL
+file. Good luck!
 
 ---
 Bob Lantz
diff --git a/examples/bigTreePing64.py b/examples/bigTreePing64.py
index 27fc9da..2e3d658 100755
--- a/examples/bigTreePing64.py
+++ b/examples/bigTreePing64.py
@@ -3,7 +3,7 @@
 """Create a tree network of depth 4 and fanout 2, and 
    test connectivity using pingTest."""
    
-from mininet import init, TreeNet, iperfTest
+from mininet import init, TreeNet, pingTestVerbose
 
 def bigTreePing64():
    results = {}
@@ -14,13 +14,13 @@ def bigTreePing64():
       k = datapath == 'kernel'
       results[ datapath ] = []
       for switchCount in range( 1, 4 ):
-         network = TreeNet( depth=4, fanout=4, kernel=k )
-         testResult = network.run( pingTest )
+         network = TreeNet( depth=3, fanout=4, kernel=k )
+         testResult = network.run( pingTestVerbose )
          results[ datapath ] += testResult
          
    print "*** Test results:", results
       
 if __name__ == '__main__':
    init()
-   linearBandwidthTest()
+   bigTreePing64()
 
diff --git a/mininet.py b/mininet.py
index 53aacb2..20b4e7a 100755
--- a/mininet.py
+++ b/mininet.py
@@ -695,7 +695,22 @@ class Cli( object ):
    # Commands
    def help( self, args ):
       "Semi-useful help for CLI"
-      print "available commands are:", self.cmds
+      print "Available commands are:", self.cmds
+      print
+      print "You may also send a command to a node using:"
+      print "  <node> command {args}"
+      print "For example:"
+      print "  mininet> h0 ifconfig"
+      print
+      print "The interpreter automatically substitutes IP addresses"
+      print "for node names, so commands like"
+      print "  mininet> h0 ping -c1 h1"
+      print "should work."
+      print
+      print "Interactive commands are not really supported yet,"
+      print "so please limit commands to ones that do not"
+      print "require user interaction, and that will terminate"
+      print "after a reasonable amount of time."
    def nodes( self, args ):
       "List available nodes"
       print "available nodes are:", [ node.name for node in self.nodelist]