diff --git a/.todo b/.todo
index 40a6082..22e7682 100644
--- a/.todo
+++ b/.todo
@@ -3,3 +3,5 @@ FART To-Do List
 - Fix subtractions of subtractions (inverting normals problem)
 - Shape definitions / reusability
 - Add distribution infrastructure
+- Add maximum recursion depth option / parameter
+- Prettify elapsed time output