4-5-isosurface.md

 # Viewing 3D iso-level surface for jet stream
 
-> NOTE: This guide can also be applied to the visualization of any 3D iso-level surface of any variable.
+> NOTE:  
+This guide can also be applied to the visualization of any 3D iso-level surface of any variable, which uses **_3D Volume_** layer.
 
 ![](img/4-5-isosurface.png)