diff --git a/openerp/netsvc.py b/openerp/netsvc.py
index f3c13535d6f..6125f2218b3 100644
--- a/openerp/netsvc.py
+++ b/openerp/netsvc.py
@@ -116,6 +116,8 @@ class ExportService(object):
     def getService(cls,name):
         return cls._services[name]
 
+    # Dispatch a RPC call w.r.t. the method name. The dispatching
+    # w.r.t. the service (this class) is done by OpenERPDispatcher.
     def dispatch(self, method, auth, params):
         raise Exception("stub dispatch at %s" % self.__name)
         
@@ -397,6 +399,11 @@ def log(title, msg, channel=logging.DEBUG_RPC, depth=None, fn=""):
             logger.log(channel, indent+line)
             indent=indent_after
 
+# This class is used to dispatch a RPC to a service. So it is used
+# for both XMLRPC (with a SimpleXMLRPCRequestHandler), and NETRPC.
+# The service (ExportService) will then dispatch on the method name.
+# This can be re-written as a single function
+#   def dispatch(self, service_name, method, params, auth_provider).
 class OpenERPDispatcher:
     def log(self, title, msg, channel=logging.DEBUG_RPC, depth=None, fn=""):
         log(title, msg, channel=channel, depth=depth, fn=fn)
diff --git a/openerp/service/http_server.py b/openerp/service/http_server.py
index 61713e9f2dd..d22d32aabeb 100644
--- a/openerp/service/http_server.py
+++ b/openerp/service/http_server.py
@@ -213,7 +213,8 @@ class BaseHttpDaemon(threading.Thread, netsvc.Server):
         
         return ret
     
-
+# No need for these two classes: init_server() below can initialize correctly
+# directly the BaseHttpDaemon class.
 class HttpDaemon(BaseHttpDaemon):
     _RealProto = 'HTTP'
     def __init__(self, interface, port):
@@ -270,6 +271,8 @@ def list_http_services(protocol=None):
         raise Exception("Incorrect protocol or no http services")
 
 import SimpleXMLRPCServer
+# Basically, this class extends SimpleXMLRPCRequestHandler to use
+# OpenERPDispatcher as the dispatcher (to select the correct ExportService).
 class XMLRPCRequestHandler(netsvc.OpenERPDispatcher,FixSendError,HttpLogHandler,SimpleXMLRPCServer.SimpleXMLRPCRequestHandler):
     rpc_paths = []
     protocol_version = 'HTTP/1.1'