diff --git a/Readme.org b/Readme.org
index bdda038..52648c3 100644
--- a/Readme.org
+++ b/Readme.org
@@ -173,8 +173,11 @@ Note: this section only tracks the state of incomplete TODO items. Having everyt
 - core code is nostd compatible?
 - cut down all extra clones of code tree branches
 ** TODO v1.1 tasks
+- memoize builtin
 - def marks user defined functions / lambdas as pure/impure
-- optimize routine implemented that precomputes pure code branches
+- optimize routine implemented
+  - precomputes pure code branches
+  - memoizes pure functions
 - def should call optimize routine on any function or lambda definition
 - interactive development library calls optimize routine
 - Can pass args to flesh scripts (via command line)