@Justo Thank you! UV Sync is a very specific feature of the Blender. It synchronizes the selection in the editing mode and the UV editor. Addon extends this functionality.
huzzah! you jogged my memory! it was this I was hunting for https://docs.unrealengine.com/latest/INT/Engine/Rendering/Materials/Functions/Reference/Procedurals/index.html
Here's a few threads found with the search function... Photoshop Brushes (post them here!) Sharing is caring: brushes Creating a 'Scratches' Brush in PS
Perhaps the pit/indent in the center of the tail is used to encapsulate and shield the driver. I think it looks cool as well :) curious to see how it functions.