Here are the classes, structs, unions and interfaces with brief descriptions:

CSG_Array
CSG_Buffer
CSG_Bytes
CSG_Bytes_Array
CSG_Class_Statistics
CSG_Cluster_Analysis
CSG_Colors
CSG_Data_Object
CSG_Distance_Weighting
CSG_File
CSG_Formula
CSG_Grid
CSG_Grid_Cell_Addressor
CSG_Grid_Pyramid
CSG_Grid_Radius
CSG_Grid_Stack
CSG_Grid_System
CSG_Index
CSG_Matrix
CSG_MetaData
CSG_Module
CSG_Module_Grid
CSG_Module_Grid_Interactive
CSG_Module_Interactive
CSG_Module_Interactive_Base
CSG_Module_Library
CSG_Module_Library_Interface
CSG_Module_Library_Manager
CSG_Parameter
CSG_Parameter_Bool
CSG_Parameter_Choice
CSG_Parameter_Color
CSG_Parameter_Colors
CSG_Parameter_Data
CSG_Parameter_Data_Object
CSG_Parameter_Data_Object_Output
CSG_Parameter_Degree
CSG_Parameter_Double
CSG_Parameter_File_Name
CSG_Parameter_Fixed_Table
CSG_Parameter_Font
CSG_Parameter_Grid
CSG_Parameter_Grid_List
CSG_Parameter_Grid_System
CSG_Parameter_Int
CSG_Parameter_List
CSG_Parameter_Node
CSG_Parameter_Parameters
CSG_Parameter_PointCloud
CSG_Parameter_PointCloud_List
CSG_Parameter_Range
CSG_Parameter_Shapes
CSG_Parameter_Shapes_List
CSG_Parameter_String
CSG_Parameter_Table
CSG_Parameter_Table_Field
CSG_Parameter_Table_List
CSG_Parameter_Text
CSG_Parameter_TIN
CSG_Parameter_TIN_List
CSG_Parameter_Value
CSG_Parameters
CSG_Parameters_Grid_Target
CSG_Point
CSG_Point_Z
CSG_Point_ZM
CSG_PointCloud
CSG_Points
CSG_Points_Int
CSG_Points_Z
CSG_Projection
CSG_Projections
CSG_PRQuadTree
CSG_PRQuadTree_Item
CSG_PRQuadTree_Leaf
CSG_PRQuadTree_Leaf_List
CSG_PRQuadTree_Node
CSG_PRQuadTree_Node_Statistics
CSG_Rect
CSG_Rects
CSG_Regression
CSG_Regression_Multiple
CSG_Shape
CSG_Shape_Line
CSG_Shape_Part
CSG_Shape_Point
CSG_Shape_Point_Z
CSG_Shape_Point_ZM
CSG_Shape_Points
CSG_Shape_Polygon
CSG_Shape_Polygon_Part
CSG_Shapes
CSG_Shapes_OGIS_Converter
CSG_Shapes_Search
CSG_Simple_Statistics
CSG_Spline
CSG_Stack
CSG_String
CSG_Strings
CSG_Table
CSG_Table_DBase
CSG_Table_Record
CSG_Table_Value
CSG_Table_Value_Binary
CSG_Table_Value_Date
CSG_Table_Value_Double
CSG_Table_Value_Int
CSG_Table_Value_String
CSG_Test_Distribution
CSG_Thin_Plate_Spline
CSG_TIN
CSG_TIN_Edge
CSG_TIN_Node
CSG_TIN_Triangle
CSG_Translator
CSG_Trend
CSG_UI_Parameter
CSG_Vector
SSG_Point
SSG_Point_Int
SSG_Point_Z
SSG_Point_ZM
SSG_Rect
CSG_Table_DBase::TFieldDesc
CSG_Formula::TSG_Formula_Item
CSG_TIN::TTIN_Edge
CSG_TIN::TTIN_Triangle