4-5-isosurface.md

@@ -2,6 +2,8 @@
 
 > NOTE: Most parts of this guide can also be applied to the visualization of any 3D iso-level surface of any variable.
 
+![](img/4-5-isosurface)
+
 > For the terms & names of UI components, refer to _[UI Components](3-1-ui-components)_.
 
 ##### 1. Do this.