This .NET enum wraps the AcDbSectionSettings::SectionType ObjectARX enum. 

It gives options for section generation. This enum is used to get and set properties for generated section geometry.

Public Enum SectionType
  LiveSection = 1
  Section2d = 2
  Section3d = 4
End Enum

public enum SectionType {
  LiveSection = 1,
  Section2d = 2,
  Section3d = 4
}