diff --git a/todo.md b/todo.md
index 16cf2bd..45c0df6 100644
--- a/todo.md
+++ b/todo.md
@@ -1,3 +1,4 @@
 - "Editor" class that has cursors.
 - Some way of scrolling the view...?
-- File loading.
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+- File loading.
+- Self-balancing tree for rope
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