Add a comment about a confusing parameter.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@38159 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/MovementGroup.py

@@ -36,6 +36,10 @@ class FakeMovementError(Exception) : pass
 class MovementGroupError(Exception) : pass
 
 class MovementGroupNode:
+  # XXX last_line_movement_group is a wrong name. Actually, it is
+  # the last delivery movement group. This parameter is used to
+  # pick up a branching point of making separate lines when
+  # a separate method requests separating movements.
   def __init__(self, movement_group_list=None, movement_list=None,
                last_line_movement_group=None,
                separate_method_name_list=[], movement_group=None):