Issue link: https://resources.randsim.com/i/1492512
132 Exclusion Region: Special Extension The Exclusion Region properties enable you to specify a region to be excluded from optimization. Since 22r2, the thickness is editable in Mixable-Simp and Level-set Topology optimization. In 23r1, you can also choose the extension type: -Isotropic: expansion in every direction from the selected surfaces -Orthotropic: expansion along the surface normal. It is available when selecting a surface. For edge or node, it is Isotropic only. Regions to exclude (in red) Mixable-Simp Level-set isotropic Orthotropic