Add TODO
diff --git a/TODO b/TODO
index 0c09f00..1344bf3 100644
--- a/TODO
+++ b/TODO
@@ -17,6 +17,7 @@
 - Misc features:
   * init/medi/fina/isol for non-cursive scripts
   * vkna,hkna etc for kana, etc
+  * smpl,trad for ZHS / ZHT
 
 - Add Pango backend?