diff --git a/src/experimental/note.md b/src/experimental/note.md
index 4c07fe63..cb749749 100644
--- a/src/experimental/note.md
+++ b/src/experimental/note.md
@@ -5,3 +5,4 @@ to_do:
 dotSCAD 3.0 Dev
 
 - `util/sort`: `by` accepts a function literal.
+- `util/bsearch`: only supports `sorted` and `target` parameters. I view it as a new function.
\ No newline at end of file