About the Flip Profile Command
You can use the Flip Profile command when creating or redefining a flange wall to flip the wall orientation along the attachment edge. To make the command available on the Shape tab and shortcut menu, set the smt_allow_flip_sketch configuration option to yes.
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When you flip the angle of a 2D section, the section is moved to an offset edge to retain the symmetry around the attachment wall. When you flip the angle of a 3D section, the section is mirrored about a plane located at half the thickness of the section.