diff --git a/TODO b/TODO
index 4204a9b2..affdd2e8 100644
--- a/TODO
+++ b/TODO
@@ -17,6 +17,9 @@ Medium Priority
 * highlighters and filters groups. So that many different highlighters
   (for example syntax highlighting for a language) can be handled as one.
 
+* Write a MemoryView class and port const vectors parameters to memory
+  views in order to avoid useless memory copies.
+
 Low Priority
 ------------