| Cad2DPoint | The Cad 2 d point. |
| Cad2LineAngularDimension | The Cad angle dimension. |
| Cad3DFace | Class that describes 3DFACE entity |
| Cad3DPoint | The Cad point. |
| Cad3DSolid | Class describing Cad 3DSolid |
| CadAcadEvaluationGraph | Class describing ACAD_EVALUATION_GRAPH object. |
| CadAcadProxyEntity | Class describing CadAcadProxyEntity |
| CadAcDbAssocNetwork | Class describing Ac Db Assoc Network. |
| CadAcDbAssocVariable | Class describing Ac Db Assoc Network. |
| CadAcDbBlockRepresentationData | Class describing ACDB_BLOCKREPRESENTATION_DATA object. |
| CadAcDbDynamicBlockPurgePreventerVersion | Class describing ACDB_DYNAMICBLOCKPURGEPREVENTER_VERSION object. |
| CadAcdsData | Class describing CadAcdsData |
| CadAcdsRecord | Class describing CadAcdsRecord |
| CadAcdsSchema | Class describing CadAcdsSchema |
| CadAcidBlockReferenceEntity | The Cad AcidBlockReferenceEntity |
| CadAcshHistoryClass | Class describing CadAcshHistoryClass object. |
| CadAcshPyramidClass | Class describing CadAcshPyramidClass object. |
| CadAlignedDimension | The Cad aligned dimension. |
| CadAngularDimension | The Cad angular dimension. |
| CadApplicationCodes | The Cad Application Defined Codes |
| CadApplicationCodesContainer | The CadApplicationCodes Container |
| CadArc | Class describing Cad ARC |
| CadArcLengthDimension | The cad arc length dimension |
| CadBase | Base class for Cad objects |
| CadBaseAcds | Base class for Cad objects |
| CadBaseEntity | The Cad base entity object. |
| CadBaseExtrudedEntity | The Cad base extruded entity object. |
| CadBaseInfinityEntity | Class describing CadBaseInfinityEntity |
| CadBaseObject | Base class for Cad objects |
| CadBaseOwned | The Cad base owned object. |
| CadBlockEntity | The Cad block entity. |
| CadBody | The Cad body. |
| CadBreakData | Class describing CadBreakData object. |
| CadCellMargin | Class describing CadCellMargin |
| CadCellStyle | Class describing CadCellStyle |
| CadCellStyleMap | Class describing CadCellStyleMap |
| CadCircle | Class describing Cad circle |
| CadClassEntity | The Cad class entity. |
| CadContentFormat | Class describing CadContentFormat |
| CadCoordinationModel | Class describing Coordination Model |
| CadDbColor | Class describing DBCOLOR object. |
| CadDbEvalExpr | Class describing CadDbEvalExpr object. |
| CadDgnUnderlay | Class describing CadDgnUnderlay |
| CadDiametricDimension | The Cad diameter dimension. NOTE: This class is an exact copy of CadRadialDimension except sublcass name |
| CadDictionaryVar | Class describing DICTIONARYVAR object. |
| CadDimensionBase | The CadDimension class |
| CadDimensionBaseR12 | Represents dimension in old R12 format which stores all points in one place |
| CadDimensionOrdinate | The Cad dimension ordinate. |
| CadDwfUnderlay | Class describing CadDwfUnderlay |
| CadEllipse | Class describing Cad ellipse |
| CadEmbeddedObject | The Cad embedded object. |
| CadEmbeddedObjectContainer | The embedded object Container |
| CadExtrudedSurface | The Cad revolved surface. |
| CadFieldList | Class describing CadFieldList object. |
| CadGeoData | Class describing GeoData object. |
| CadGridFormat | Class describing CadGridFormat |
| CadGroup | Class describing CadGroup object. |
| CadHeader | Class describing Cad header |
| CadHelix | Class describing CadHelix |
| CadInsertObject | The Cad insert object. |
| CadJoggedDimension | The cad jogged dimension |
| CadLayerFilter | Class describing LAYER_FILTER object. |
| CadLayout | The Cad layout object. |
| CadLeader | Class describing Cad leader |
| CadLight | Class describing CadLight |
| CadLightList | Class describing LIGHTLIST object. |
| CadLine | Class describing Cad line |
| CadLoftedSurface | The Cad lofted surface. |
| CadLwPolyline | Class describing Cad lwPoliline |
| CadMargin | Class describing CadMargin |
| CadMaterial | Class describing CadMaterial |
| CadMesh | Class describing CadMesh |
| CadMLeader | Class describing Cad multileader |
| CadMLeaderBlock | Class describing MLeader block |
| CadMLeaderContextData | Class describing context data for multileader |
| CadMLeaderLine | Class describing Cad multileader line |
| CadMLeaderNode | Class describing Cad multileader node |
| CadMLeaderStyle | Class describing CadMLeaderStyle |
| CadMLeaderStyleObject | The Cad MLeaderStyle. |
| CadMText | Class describing Cad Mtext |
| CadMultiLine | The Cad multi line. |
| CadMultiLineVectorBlock | Cad mline vector block |
| CadObjectAttribute | CadObjectAttribute |
| CadObjectPtr | Class describing OBJECT_PTR object. |
| CadObjectWithAcisData | Base class for CAD entity which contains ACIS data |
| CadOle2Frame | The Cad OLE2FRAME. |
| CadOleFrame | The Cad OleFrame. |
| CadPdfUnderlay | Class describing CadPdfUnderlay |
| CadPlaneSurface | The Cad surface base. |
| CadPlotSettings | The Cad Plot Settings object. |
| CadPoint | Class describing Cad Point |
| CadRadialDimension | The Cad radial dimension. NOTE: This class is an exact copy of CadDiametricDimension except sublcass name |
| CadRasterImage | Class describing Cad raster image |
| CadRasterImageDef | The Cad aster image definition object. |
| CadRasterImageDefReactor | The Cad raster image definition reactor object. |
| CadRay | Class describing CadRay |
| CadRegion | The region entity |
| CadRevolvedSurface | The Cad revolved surface. |
| CadRotatedDimension | The Cad rotated dimension. |
| CadSection | Class describing CadSection |
| CadSectionViewStyle | Class describing CadSectionViewStyle |
| CadSeqend | Class describing Cad SEQEND. For CadConsts.CadSubClassName.SEQEND type. |
| CadShape | The Cad surface. |
| CadSize | The Cad size |
| CadSkyLightBackGround | Class describing CadSkyLightBackGround object. |
| CadSolid | Class describing CadSolid |
| CadSpatialFilter | Class describing SPATIAL_FILTER object. |
| CadSpatialIndex | Class describing SPATIAL_INDEX object. |
| CadSpline | Class describing Cad SPLINE |
| CadSun | The Cad sun. |
| CadSunObject | The Cad sun object. |
| CadSweptSurface | The Cad swept surface. |
| CadTableContent | Class describing TABLECONTENT object. |
| CadTableFormat | Class describing CadTableFormat |
| CadTableGeometry | Class describing TABLEGEOMETRY object. |
| CadTableStyle | Class describing CadTableStyle |
| CadText | Class describing Cad text |
| CadThumbnailImage | The Cad ThumbnailImage entity. |
| CadTolerance | The Cad tolerance. |
| CadTrace | TRACE class |
| CadUnderlay | Class describing CadUnderlay |
| CadUnused | Represents CadUnused object. |
| CadVbaProject | Class describing VBA_PROJECT object. |
| CadViewport | The Cad view port. |
| CadVisualStyle | Class describing CadVisualStyle |
| CadWipeoutVariables | Class describing WIPEOUTVARIABLES object. |
| CadXdata | The Cad xdata. |
| CadXdataContainer | The Xdata Container |
| CadXLine | Class describing CadXLine |
| CadXRecord | Class describing CadXRecord |
