Skinning Symmetry flags are used to enforce equality between All feature lines, Top and Bottom, or Right and Left controls. All Symmetric will equate the Right, Bottom, and Left to the Top controls. Similarly, Top controls Bottom and Right controls left when Symmetry is enforced. Activating Symmetry does not ensure that your component is symmetric about its own axes, rather as described it sets the relevant parameters equal according to your specification. This video demonstrates how each Symmetry setting controls the relevant feature lines and how Symmetry behaves with rotated or translated cross-sections.