public enum CrossSectionType| Open | 0 | Open cross-section (standard M11) |
| ClosedIrregular | 1 | Closed irregular/Polygon cross-section |
| ClosedCircular | 2 | Circular closed cross-section |
| ClosedRectangular | 3 | Rectangular closed cross-section |
| IsOneOf |
Returns true if enumeration is one of the listed ones.
(Defined by GenericExtensions) |