Update 4 3 horizontal vector field

4-3-horizontal-vector-field.md

@@ -33,7 +33,7 @@ On _Vector Plane_ menu category of _Menu Bar_, you can select one of the followi
 * Wind barbs : show distribution using wind barbs
 * Streamlines : show distribution using streamlines (optionally with animation)
 
-Each menu button has drop-down submenu, where you can set various options for each visualization style. 
+Each menu button has drop-down submenu, where you can set various options for each visualization style. For example, in streamline style you can choose _'glow'_ effect and start animation, so that wind flow is visualized using nice animation with moving colored dots.
 
 
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