diff --git a/python/obitools3/dms/view/view.pyx b/python/obitools3/dms/view/view.pyx
index 64e4c56..a9bfcc6 100755
--- a/python/obitools3/dms/view/view.pyx
+++ b/python/obitools3/dms/view/view.pyx
@@ -332,7 +332,7 @@ cdef class View(OBIWrapper) :
         if type(ref) == int :
             return Line(self, ref)
         else :  # TODO assume str or bytes for optimization (discuss)
-            return self.get_column(ref)    # TODO hyper lent dans la pratique            
+            return self.get_column(ref)    # note: slow, always better to keep column ref in a variable            
 
     
     @OBIWrapper.checkIsActive