diff --git a/modules/source/06_spatial/spatial_dev.py b/modules/source/06_spatial/spatial_dev.py
index 34931cd9..0668c48f 100644
--- a/modules/source/06_spatial/spatial_dev.py
+++ b/modules/source/06_spatial/spatial_dev.py
@@ -728,6 +728,12 @@ except Exception as e:
 
 print("📈 Final Progress: Complete CNN system ready for computer vision!")
 
+# %% [markdown]
+"""
+## 🔧 DEVELOPMENT
+"""
+
+# %%
 def test_unit_convolution_operation():
     """Unit test for the convolution operation implementation."""
     print("🔬 Unit Test: Convolution Operation...")