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diff --git a/TODO.rst b/TODO.rst
index 99baab8..b05a8d4 100644
--- a/TODO.rst
+++ b/TODO.rst
@@ -1,4 +1,13 @@
+- Several built-in support
+  - or
+  - string=?
+  - string<?
+  - string>?
+  - string<=?
+  - string>=?
+
 - Testing
+- Rounding support
 - Garbage Collection?
 - ext_repr optimization 
 - Add macro support