diff --git a/src/experimental/note.md b/src/experimental/note.md
index 468d1604..54c309e2 100644
--- a/src/experimental/note.md
+++ b/src/experimental/note.md
@@ -2,6 +2,24 @@
 - deprecate `trianglate`, use `tri_ear_clipping`.
 - deprecate `circle_path`, `use circle_shape`.
 
+Category
+
+- base
+    -- util
+    -- matrix
+    -- convex
+    -- ptf
+    -- tri
+
+- other
+    -- pixel
+    -- part
+    -- maze
+    -- pnoise
+    -- voronoi
+    -- sf
+    -- turtle
+
 Preview
 
 - `sweep`