|  Add3DFace | Adds a 3DFace with four vertices. | 
|  Add3DMesh | Adds a 3DMesh given the coordinates and mesh information. | 
|  Add3DPoly | Adds a 3dPolyline given the vertices as a points collection. | 
|  AddArc | Adds an Arc given the center, radius, start angle and end angle. | 
|  AddArc3pt | Adds a Circle given the start point, point on arc and end point. | 
|  AddAttributeDef | Adds an Attribute Definition at the given insertion point and other attribute information. | 
|  AddBox | Adds a Polygon Mesh box given the origin, length, width and height. | 
|  AddCircle | Adds a Circle given the center and radius. | 
|  AddCircle3pt | Adds a Circle given the 3 points on circumference. | 
|  AddCone | Adds a Polygon Mesh cone given the center, base radius, and height. | 
|  AddCylinder | Adds a Polygon Mesh cylinder given the center, base radius, and height. | 
|  AddDim3PointAngular | Adds a 3 Point Angular Dimension object. | 
|  AddDimAligned | Adds an Aligned Dimension object. | 
|  AddDimAngular | Adds an Angular Dimension object. | 
|  AddDimDiametric | Adds a Diameter Dimension object. | 
|  AddDimOrdinate | Adds an Ordinate Dimension object. | 
|  AddDimRadial | Adds a Radius Dimension object. | 
|  AddDimRotated | Adds a Rotated Dimension object. | 
|  AddEllipse | Adds an ellipse given the center, major axis and the radius ratio. | 
|  AddEllipticalCone | Adds a elliptical cone with given height and rotation. | 
|  AddEllipticalCylinder | Adds a elliptical cylinder with given height and rotation. | 
|  AddExtrudedSolid | Adds a extruded solid with given height and rotation. | 
|  AddExtrudedSolidAlongPath | Adds a extruded solid along a path with given height and rotation. | 
|  AddHatch | Adds a hatch entity. | 
|  AddImage | Adds an image. | 
|  AddInfiniteLine | Adds an infinite line passing through two given points. | 
|  AddLeader | Adds a leader line, given the coordinates of the points and Annotation object. | 
|  AddLightWeightPolyline | Adds a lightweight polyline. | 
|  AddLine | Adds a line passing through two points. | 
|  AddMText | Adds a multiline text entity in a rectangle defined by the insertion point and width of the text window. | 
|  AddPointEntity | Adds a point entity at a given location. | 
|  AddPolyfaceMesh | Adds a polyface mesh. | 
|  AddPolyline | Adds a polyline from a list of vertices. | 
|  AddPViewport | Adds a paperspace viewport given the center, width and height. | 
|  AddRay | Adds a ray passing through two points. | 
|  AddRegion | Adds a region with given height and rotation. | 
|  AddRevolvedSolid | Adds a revolved solid with given height and rotation. | 
|  AddShape | Adds a shape entity with given height and rotation. | 
|  AddSolid | Adds a two-dimensional wolid polygon. | 
|  AddSphere | Adds a polygon mesh sphere at the origin given the center point and radius. | 
|  AddSpline | Adds a spline given the input coordinates as a points collection. | 
|  AddTable | Adds a table entity. | 
|  AddText | Adds a text entity with given height and rotation. | 
|  AddTolerance | Creates a tolerance entity. | 
|  AddTorus | Adds a polygon mesh torus given the location, torus radius and tube radius. | 
|  AddTrace | Adds a trace entity given the coordinates as a points collection. | 
|  AddWedge |   | 
|  AttachExternalReference | Attaches the specified drawing as an external reference. | 
|  InsertBlock | Adds a new block. | 
|  Item | Given the index, returns one of the entities in the collection. |