diff -r 044dc196ec8a -r d3668ecd9137 src/ztfy/utils/tal/interfaces.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/ztfy/utils/tal/interfaces.py	Wed Jun 20 16:29:53 2012 +0200
@@ -0,0 +1,83 @@
+### -*- coding: utf-8 -*- ####################################################
+##############################################################################
+#
+# Copyright (c) 2008-2010 Thierry Florac <tflorac AT ulthar.net>
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+
+__docformat__ = "restructuredtext"
+
+# import standard packages
+
+# import Zope3 interfaces
+
+# import local interfaces
+
+# import Zope3 packages
+from zope.interface import Interface
+
+# import local packages
+
+
+class ITextStartTalesAPI(Interface):
+    """'start' TALES namespace interface"""
+
+    def __getattr__(attr):
+        """Get first characters of adapted text, without cutting words"""
+
+
+class ITextOutputTalesAPI(Interface):
+    """'text' TALES namespace interface"""
+
+    def js():
+        """Convert adapted text to a JavaScript compatible output"""
+
+    def noquotes():
+        """Remove double quotes from adapted text"""
+
+    def breaks():
+        """Replace '|' by newlines in adapted text"""
+
+    def translate():
+        """Use I18n translation of given text"""
+
+
+class IHTMLTalesAPI(Interface):
+    """'html' TALES namespace interface"""
+
+    def renderer():
+        """Get text to HTML renderer"""
+
+    def totext():
+        """Convert adapted HTML content to text"""
+
+    def text():
+        """Convert adapted text to HTML"""
+
+    def stx():
+        """Convert adapted StructuredText to HTML"""
+
+    def rest():
+        """Convert adapted reStructuredText to HTML"""
+
+
+class IRequestDataTalesAPI(Interface):
+    """Request 'data' TALES namespace interface"""
+
+    def __getattr__(attr):
+        """Get request data for given attribute"""
+
+
+class ISessionDataTalesAPI(Interface):
+    """Session data TALES namespace interface"""
+
+    def __getattr__(attr):
+        """Get session data for given app and key"""