diff --git a/todo.md b/todo.md
index a744fcaf..a5495019 100644
--- a/todo.md
+++ b/todo.md
@@ -1,6 +1,8 @@
 * geom
 	* 0-dim points
 	* 0-dim matrices
+	* Primitives of dynamic runtime size (Eigen-like)
+	* Tests
 * ui
 	* design & implement a ui engine
 	* separated logic & rendering & event handling