add XXX

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@35973 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/Document/SupplyChain.py

@@ -173,6 +173,8 @@ class SupplyChain(Path, XMLObject):
       If recursive, browse the SupplyChain until a valid link is found.
       checked_link_list is used to prevent infinite loop.
     """
+    # XXX document "all" parameter if you can
+
     # Initialize checked_link_list parameter...
     if checked_link_list is None:
       checked_link_list = []