diff --git a/Todo%3A.md b/Todo%3A.md
index 1881b09..c00ef38 100644
--- a/Todo%3A.md
+++ b/Todo%3A.md
@@ -1,2 +1,2 @@
-- fix testure offset when using many chunks
-- add multi threading!
\ No newline at end of file
+- [ ] fix testure offset when using many chunks
+- [ ] add multi threading!
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