diff --git a/python/obitools3/dms/view/view.pyx b/python/obitools3/dms/view/view.pyx
index 2cda8a2..b354b19 100755
--- a/python/obitools3/dms/view/view.pyx
+++ b/python/obitools3/dms/view/view.pyx
@@ -77,7 +77,7 @@ cdef class View(OBIWrapper) :
  
  
     @staticmethod
-    def import_view(object dms_1, object dms_2, object view_name_1, object view_name_2):
+    def import_view(object dms_1, object dms_2, object view_name_1, object view_name_2): # TODO argument to import line by line to avoid huge AVL copy
         if obi_import_view(tobytes(dms_1), tobytes(dms_2), tobytes(view_name_1), tobytes(view_name_2)) < 0 :
             raise Exception("Error importing a view")