diff --git a/src/experimental/note.md b/src/experimental/note.md
index 9ee247c3..f3003ca9 100644
--- a/src/experimental/note.md
+++ b/src/experimental/note.md
@@ -1,4 +1,6 @@
 to_do:
 
 - deprecate paths2sections(paths) -> rails2sections(rails)
-- deprecate path_scaling_sections(shape_pts, edge_path) -> rail_extruded_sections(shape_pts, rail)
\ No newline at end of file
+- deprecate path_scaling_sections(shape_pts, edge_path) -> rail_extruded_sections(shape_pts, rail)
+
+- doc: sf add convexity
\ No newline at end of file