diff --git a/final/todo.md b/final/todo.md
index 7aeb829..1da683d 100644
--- a/final/todo.md
+++ b/final/todo.md
@@ -3,4 +3,5 @@
 * [ ] Add precharger version of memory cell (or explain how they compose)
 * [ ] Test cell in the _middle_.
 * [ ] Walk through the consequences of the read/write block being in the middle.
-* [ ] Test data close to write block (it pulls up past clock low!)
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+* [ ] Test data close to write block (it pulls up past clock low!)
+* [ ] Drive wires to zero?
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