diff -r 000000000000 -r 747fc65e13e2 src/ztfy/baseskin/schema.py
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/ztfy/baseskin/schema.py	Sun May 11 02:03:37 2014 +0200
@@ -0,0 +1,38 @@
+#
+# Copyright (c) 2012 Thierry Florac <tflorac AT onf.fr>
+# All Rights Reserved.
+#
+
+
+# import standard packages
+
+# import Zope3 interfaces
+from z3c.form.interfaces import IButton
+
+# import local interfaces
+
+# import Zope3 packages
+from z3c.form.button import Button
+from zope.interface import implements
+
+# import local packages
+
+
+class IResetButton(IButton):
+    """Reset button interface"""
+
+
+class ResetButton(Button):
+    """Reset button"""
+
+    implements(IResetButton)
+
+
+class ICloseButton(IButton):
+    """Close button interface"""
+
+
+class CloseButton(Button):
+    """Close button"""
+
+    implements(ICloseButton)