diff --git a/README b/README
index 7982bbc..bb175e8 100644
--- a/README
+++ b/README
@@ -1,6 +1,6 @@
 To launch the application, run 
 
-./relational.py
+./relational_gui.py
 
 If it needs some dependencies, check this page:
 http://galileo.dmi.unict.it/wiki/relational/doku.php?id=download#install
diff --git a/relational/optimizer.py b/relational/optimizer.py
index 50bdb1d..813e0d1 100644
--- a/relational/optimizer.py
+++ b/relational/optimizer.py
@@ -1,3 +1,4 @@
+# -*- coding: utf-8 -*-
 # coding=UTF-8
 # Relational
 # Copyright (C) 2008  Salvo "LtWorf" Tomaselli
@@ -17,7 +18,8 @@
 # 
 # author Salvo "LtWorf" Tomaselli <tiposchi@tiscali.it>
 
-'''This module optimizes relational expressions into ones that require less time to be executed'''
+'''This module optimizes relational expressions into ones that require less time to be executed
+For now it is highly experimental, and it shouldn't be used in 3rd party applications.'''
 
 RELATION=0
 UNARY=1