Here is a list of all struct and union fields with links to the structures/unions they belong to:

- n -

• n_density : _dwg_entity_POLYLINE_MESH
• name : _dwg_abstractobject_UNDERLAYDEFINITION , _dwg_AcDs_Segment , _dwg_BLOCKACTION_connectionpts , _dwg_BLOCKPARAMETER_connection , _dwg_BLOCKVISIBILITYPARAMETER_state , _dwg_color , _dwg_COMPOUNDOBJECTID , _dwg_dxfname , _dwg_entity_BLOCK , _dwg_entity_HATCH , _dwg_entity_LIGHT , _dwg_entity_MPOLYGON , _dwg_entity_POINTCLOUDEX , _dwg_entity_SECTIONOBJECT , _dwg_LAYER_entry , _dwg_LIGHTLIST_light , _dwg_LinkedData , _dwg_object , _dwg_object_APPID , _dwg_object_ASSOCACTIONPARAM , _dwg_object_ASSOCASMBODYACTIONPARAM , _dwg_object_ASSOCCOMPOUNDACTIONPARAM , _dwg_object_ASSOCDEPENDENCY , _dwg_object_ASSOCDIMDEPENDENCYBODY , _dwg_object_ASSOCEDGEACTIONPARAM , _dwg_object_ASSOCFACEACTIONPARAM , _dwg_object_ASSOCOBJECTACTIONPARAM , _dwg_object_ASSOCOSNAPPOINTREFACTIONPARAM , _dwg_object_ASSOCPATHACTIONPARAM , _dwg_object_ASSOCPOINTREFACTIONPARAM , _dwg_object_ASSOCVARIABLE , _dwg_object_ASSOCVERTEXACTIONPARAM , _dwg_object_BLOCK_HEADER , _dwg_object_BLOCKALIGNEDCONSTRAINTPARAMETER , _dwg_object_BLOCKALIGNMENTGRIP , _dwg_object_BLOCKALIGNMENTPARAMETER , _dwg_object_BLOCKANGULARCONSTRAINTPARAMETER , _dwg_object_BLOCKARRAYACTION , _dwg_object_BLOCKBASEPOINTPARAMETER , _dwg_object_BLOCKDIAMETRICCONSTRAINTPARAMETER , _dwg_object_BLOCKFLIPACTION , _dwg_object_BLOCKFLIPGRIP , _dwg_object_BLOCKFLIPPARAMETER , _dwg_object_BLOCKHORIZONTALCONSTRAINTPARAMETER , _dwg_object_BLOCKLINEARCONSTRAINTPARAMETER , _dwg_object_BLOCKLINEARGRIP , _dwg_object_BLOCKLINEARPARAMETER , _dwg_object_BLOCKLOOKUPACTION , _dwg_object_BLOCKLOOKUPGRIP , _dwg_object_BLOCKLOOKUPPARAMETER , _dwg_object_BLOCKMOVEACTION , _dwg_object_BLOCKPARAMDEPENDENCYBODY , _dwg_object_BLOCKPOINTPARAMETER , _dwg_object_BLOCKPOLARGRIP , _dwg_object_BLOCKPOLARPARAMETER , _dwg_object_BLOCKPOLARSTRETCHACTION , _dwg_object_BLOCKPROPERTIESTABLEGRIP , _dwg_object_BLOCKRADIALCONSTRAINTPARAMETER , _dwg_object_BLOCKROTATEACTION , _dwg_object_BLOCKROTATIONGRIP , _dwg_object_BLOCKROTATIONPARAMETER , _dwg_object_BLOCKSCALEACTION , _dwg_object_BLOCKSTRETCHACTION , _dwg_object_BLOCKUSERPARAMETER , _dwg_object_BLOCKVERTICALCONSTRAINTPARAMETER , _dwg_object_BLOCKVISIBILITYGRIP , _dwg_object_BLOCKVISIBILITYPARAMETER , _dwg_object_BLOCKXYGRIP , _dwg_object_BLOCKXYPARAMETER , _dwg_object_DIMSTYLE , _dwg_object_GEOMAPIMAGE , _dwg_object_GROUP , _dwg_object_IBL_BACKGROUND , _dwg_object_LAYER , _dwg_object_LTYPE , _dwg_object_MATERIAL , _dwg_object_MENTALRAYRENDERSETTINGS , _dwg_object_MLINESTYLE , _dwg_object_RAPIDRTRENDERSETTINGS , _dwg_object_RENDERSETTINGS , _dwg_object_SCALE , _dwg_object_STYLE , _dwg_object_TABLESTYLE , _dwg_object_UCS , _dwg_object_VIEW , _dwg_object_VPORT , _dwg_object_VX_TABLE_RECORD , _dwg_secondheader_handles , _dwg_section , _dwg_TABLE_CustomDataItem , _dwg_TableDataColumn , _dwg_TABLESTYLE_CellStyle , _dwg_VALUEPARAM , _dxf_field , _name , _name_subclass_fields , _name_subclasses , _name_type_fields , _r2007_section , array_hdl , Dwg_DXFClass , dwg_field_name_type_offset , Dwg_Section_Info
• name_length : _r2007_section
• named_ucs : _dwg_entity_VIEWPORT , _dwg_object_LAYOUT , _dwg_object_UCS , _dwg_object_VIEW , _dwg_object_VPORT
• names : _dwg_object_LAYERFILTER
• namidx : _dwg_AcDs_Schema_Prop
• NAVISWORKSMODEL : _dwg_object_entity
• NAVISWORKSMODELDEF : _dwg_object_object
• network_action_index : _dwg_object_ASSOCNETWORK
• network_version : _dwg_object_ASSOCNETWORK
• next : _r2007_page , _r2007_section
• next_entity : _dwg_object_entity
• next_hdl : _dwg_struct
• nextid : _dwg_EVAL_Edge , _dwg_EVAL_Node
• nextrb : _dwg_resbuf
• nitems : _array_hdls
• no_twist : _dwg_entity_LOFTEDSURFACE
• node : _dwg_EVAL_Node , _dwg_object_ASSOCDEPENDENCY
• nodeid : _dwg_CONSTRAINTGROUPNODE , _dwg_EvalExpr
• nodes : _dwg_object_ASSOC2DCONSTRAINTGROUP , _dwg_object_EVALUATION_GRAPH
• nolinks : _dwg_object_entity
• normal : _dwg_MLEADER_Content_Block , _dwg_MLEADER_Content_MText
• north_dir : _dwg_object_GEODATA
• north_dir_angle_deg : _dwg_object_GEODATA
• north_dir_angle_rad : _dwg_object_GEODATA
• NORTHDIRECTION : _dwg_header_variables
• notes : _dwg_entity_GEOPOSITIONMARKER
• nr : _dwg_secondheader_handles , _dwg_secondheader_sections
• num1 : _dwg_object_SPATIAL_INDEX
• num2 : _dwg_object_SPATIAL_INDEX
• num3 : _dwg_object_SPATIAL_INDEX
• num4 : _dwg_object_SPATIAL_INDEX
• num40 : _dwg_EvalExpr
• num5 : _dwg_object_SPATIAL_INDEX
• num6 : _dwg_object_SPATIAL_INDEX
• num_acis_sab_hdl : _dwg_struct
• num_actions : _dwg_object_ASSOC2DCONSTRAINTGROUP , _dwg_object_ASSOCMLEADERACTIONBODY , _dwg_object_ASSOCNETWORK , _dwg_object_BLOCKARRAYACTION , _dwg_object_BLOCKFLIPACTION , _dwg_object_BLOCKLOOKUPACTION , _dwg_object_BLOCKMOVEACTION , _dwg_object_BLOCKPOLARSTRETCHACTION , _dwg_object_BLOCKROTATEACTION , _dwg_object_BLOCKSCALEACTION , _dwg_object_BLOCKSTRETCHACTION
• num_alloced_objects : _dwg_struct
• num_areafillparms : _dwg_MLINE_line
• num_arrowheads : _dwg_entity_MULTILEADER
• num_attr_defs : _dwg_TABLE_Cell
• num_attrs : _dwg_TableCellContent
• num_aux_tables : _dwg_auxheader
• num_auxheader_variables : _dwg_auxheader
• num_blocklabels : _dwg_entity_MULTILEADER
• num_blocks : _dwg_BLOCKVISIBILITYPARAMETER_state , _dwg_entity_3DSOLID , _dwg_entity_EXTRUDEDSURFACE , _dwg_entity_LOFTEDSURFACE , _dwg_entity_NURBSURFACE , _dwg_entity_PLANESURFACE , _dwg_entity_REVOLVEDSURFACE , _dwg_entity_SWEPTSURFACE , _dwg_object_ACSH_BREP_CLASS , _dwg_object_ASSOCASMBODYACTIONPARAM , _dwg_object_BLOCKVISIBILITYPARAMETER
• num_blverts : _dwg_entity_SECTIONOBJECT
• num_borders : _dwg_CellStyle , _dwg_TABLESTYLE_rowstyles
• num_boundary_handles : _dwg_entity_MPOLYGON , _dwg_HATCH_Path
• num_break_heights : _dwg_entity_TABLE
• num_break_rows : _dwg_entity_TABLE
• num_breaks : _dwg_LEADER_Line , _dwg_LEADER_Node
• num_bulges : _dwg_entity_LWPOLYLINE , _dwg_PROXY_LWPOLYLINE
• num_cell_contents : _dwg_TableCell
• num_cells : _dwg_entity_TABLE , _dwg_object_CELLSTYLEMAP , _dwg_object_TABLEGEOMETRY , _dwg_TableRow
• num_childs : _dwg_object_FIELD
• num_childval : _dwg_object_FIELD
• num_classes : _dwg_struct
• num_classification_colorramps : _dwg_object_POINTCLOUDCOLORMAP
• num_clip_inverts : _dwg_abstractentity_UNDERLAY
• num_clip_verts : _dwg_abstractentity_UNDERLAY , _dwg_entity_IMAGE , _dwg_entity_WIPEOUT , _dwg_object_SPATIAL_FILTER
• num_clippings : _dwg_entity_POINTCLOUD
• num_codes : _dwg_object_BLOCKPOLARSTRETCHACTION , _dwg_object_BLOCKSTRETCHACTION
• num_col_sizes : _dwg_MLEADER_Content_MText
• num_colorramps : _dwg_object_POINTCLOUDCOLORMAP
• num_colors : _dwg_entity_HATCH , _dwg_entity_MPOLYGON
• num_cols : _dwg_entity_INSERT , _dwg_entity_MINSERT , _dwg_entity_TABLE , _dwg_LinkedTableData , _dwg_object_DATATABLE , _dwg_TableCell
• num_column_heights : _dwg_entity_MTEXT , _dwg_object_MTEXTOBJECTCONTEXTDATA
• num_connections : _dwg_BLOCKPARAMETER_PropInfo , _dwg_CONSTRAINTGROUPNODE
• num_control_points : _dwg_HATCH_PathSeg
• num_crease : _dwg_entity_MESH
• num_croppings : _dwg_entity_POINTCLOUDEX
• num_cross_sections : _dwg_entity_LOFTEDSURFACE
• num_crosssects : _dwg_object_ACSH_LOFT_CLASS
• num_ctrl_pts : _dwg_entity_HELIX , _dwg_entity_SPLINE
• num_customdata : _dwg_object_DATALINK
• num_customdata_items : _dwg_TableCell , _dwg_TableRow
• num_dashes : _dwg_HATCH_DefLine
• num_dates : _dwg_object_SUNSTUDY
• num_deflines : _dwg_entity_HATCH , _dwg_entity_MPOLYGON
• num_deps : _dwg_ASSOCPARAMBASEDACTIONBODY , _dwg_object_ASSOC2DCONSTRAINTGROUP , _dwg_object_ASSOCACTION , _dwg_object_ASSOCNETWORK , _dwg_object_ASSOCVARIABLE , _dwg_object_BLOCKARRAYACTION , _dwg_object_BLOCKFLIPACTION , _dwg_object_BLOCKLOOKUPACTION , _dwg_object_BLOCKMOVEACTION , _dwg_object_BLOCKPOLARSTRETCHACTION , _dwg_object_BLOCKROTATEACTION , _dwg_object_BLOCKSCALEACTION , _dwg_object_BLOCKSTRETCHACTION
• num_desc : Dwg_Section_InfoHdr
• num_desc2 : Dwg_Section_InfoHdr
• num_edges : _dwg_entity_MESH , _dwg_object_ACSH_CHAMFER_CLASS , _dwg_object_ACSH_FILLET_CLASS , _dwg_object_EVALUATION_GRAPH
• num_eed : _dwg_object_entity , _dwg_object_object
• num_endsetbacks : _dwg_object_ACSH_FILLET_CLASS
• num_entities : _dwg_struct
• num_entries : _dwg_AcDs_DataIndex , _dwg_CONTEXTDATA_submgr , _dwg_object_APPID_CONTROL , _dwg_object_BLOCK_CONTROL , _dwg_object_DIMSTYLE_CONTROL , _dwg_object_LAYER_CONTROL , _dwg_object_LAYER_INDEX , _dwg_object_LTYPE_CONTROL , _dwg_object_PARTIAL_VIEWING_INDEX , _dwg_object_STYLE_CONTROL , _dwg_object_UCS_CONTROL , _dwg_object_VIEW_CONTROL , _dwg_object_VPORT_CONTROL , _dwg_object_VX_CONTROL
• num_ents : _dwg_object_SORTENTSTABLE
• num_faces : _dwg_entity_MESH
• num_features : _dwg_filedeplist
• num_field_refs : _dwg_LinkedTableData
• num_fields : _dwg_object_FIELDLIST
• num_files : _dwg_filedeplist
• num_fit_pts : _dwg_entity_HELIX , _dwg_entity_SPLINE
• num_fitpts : _dwg_HATCH_PathSeg
• num_frozen_layers : _dwg_entity_VIEWPORT
• num_gentextures : _dwg_object_MATERIAL
• num_geom : _dwg_SECTION_typesettings
• num_geomesh_faces : _dwg_object_GEODATA
• num_geomesh_pts : _dwg_object_GEODATA
• num_geometry : _dwg_TableCell , _dwg_TABLEGEOMETRY_Cell
• num_geoms : _dwg_SECTION_geometrysettings
• num_groups : _dwg_object_GROUP
• num_guide_curves : _dwg_entity_LOFTEDSURFACE
• num_guides : _dwg_object_ACSH_LOFT_CLASS
• num_handles : _dwg_secondheader
• num_hatch_angles : _dwg_object_SECTIONVIEWSTYLE
• num_hdl : _dwg_secondheader_handles
• num_hdls : _dwg_object_BLOCKPOLARSTRETCHACTION , _dwg_object_BLOCKSTRETCHACTION , _dwg_object_SPATIAL_INDEX
• num_histories : _dwg_revhistory
• num_hours : _dwg_object_SUNSTUDY
• num_ididx : _dwg_AcDs_Search_IdIdx , _dwg_AcDs_Search_IdIdxs
• num_ididxs : _dwg_AcDs_Search_Data
• num_index : _dwg_AcDs_Schema
• num_inserts : _dwg_object_BLOCK_HEADER
• num_instances : _dwg_class
• num_intsectobj : _dwg_DIMASSOC_Ref
• num_items : _dwg_abstractobject_ASSOCARRAYPARAMETERS , _dwg_object_ASSOCARRAYMODIFYACTIONBODY
• num_knots : _dwg_entity_HELIX , _dwg_entity_SPLINE , _dwg_HATCH_PathSeg
• num_leaders : _dwg_MLEADER_AnnotContext
• num_lights : _dwg_object_LIGHTLIST
• num_lines : _dwg_entity_MLINE , _dwg_LEADER_Node , _dwg_MLINE_vertex , _dwg_object_MLINESTYLE
• num_m_verts : _dwg_entity_POLYLINE_2D , _dwg_entity_POLYLINE_MESH
• num_materials : _dwg_entity_3DSOLID , _dwg_entity_EXTRUDEDSURFACE , _dwg_entity_LOFTEDSURFACE , _dwg_entity_NURBSURFACE , _dwg_entity_PLANESURFACE , _dwg_entity_REVOLVEDSURFACE , _dwg_entity_SWEPTSURFACE , _dwg_object_ACSH_BREP_CLASS , _dwg_object_ASSOCASMBODYACTIONPARAM
• num_merged_cells : _dwg_FormattedTableData
• num_morehandles : _dwg_object_DIMSTYLE_CONTROL
• num_n_verts : _dwg_entity_POLYLINE_2D , _dwg_entity_POLYLINE_MESH
• num_names : _dwg_object_LAYERFILTER
• num_nodes : _dwg_object_ASSOC2DCONSTRAINTGROUP , _dwg_object_EVALUATION_GRAPH
• num_obj_ids : _dwg_object_IDBUFFER
• num_object_refs : _dwg_struct
• num_objects : _dwg_object_FIELD , _dwg_struct
• num_objid_handles : _dwg_object_XRECORD
• num_objids : _dwg_entity_PROXY_ENTITY , _dwg_object_PROXY_OBJECT
• num_orthopts : _dwg_object_UCS
• num_owned : _dwg_entity_INSERT , _dwg_entity_MINSERT , _dwg_entity_POLYLINE_2D , _dwg_entity_POLYLINE_3D , _dwg_entity_POLYLINE_MESH , _dwg_entity_POLYLINE_PFACE , _dwg_entity_TABLE , _dwg_object_BLOCK_HEADER
• num_owned_actions : _dwg_object_ASSOCNETWORK
• num_owned_params : _dwg_object_ASSOC2DCONSTRAINTGROUP , _dwg_object_ASSOCACTION , _dwg_object_ASSOCNETWORK , _dwg_object_ASSOCVARIABLE
• num_pages : _dwg_AcDs_DataBlobRef , _r2007_section
• num_params : _dwg_BLOCKVISIBILITYPARAMETER_state , _dwg_object_ASSOCCOMPOUNDACTIONPARAM , _dwg_object_ASSOCOSNAPPOINTREFACTIONPARAM , _dwg_object_ASSOCPATHACTIONPARAM , _dwg_object_ASSOCPOINTREFACTIONPARAM
• num_paths : _dwg_entity_HATCH , _dwg_entity_MPOLYGON
• num_pointrefs : _dwg_object_BREAKDATA
• num_points : _dwg_3DSOLID_wire , _dwg_entity_LEADER , _dwg_entity_LWPOLYLINE , _dwg_LEADER_Line , _dwg_object_LEADEROBJECTCONTEXTDATA , _dwg_PROXY_LWPOLYLINE
• num_prop_entries : _dwg_AcDs_SchemaIndex
• num_propinfos : _dwg_object_BLOCKBASEPOINTPARAMETER , _dwg_object_BLOCKLOOKUPPARAMETER , _dwg_object_BLOCKPOINTPARAMETER , _dwg_object_BLOCKUSERPARAMETER , _dwg_object_BLOCKVISIBILITYPARAMETER
• num_propnames : _dwg_AcDs_SchemaData
• num_props : _dwg_AcDs_Schema , _dwg_AcDs_SchemaIndex , _dwg_object_VISUALSTYLE , _dwg_summaryinfo
• num_pts : _dwg_object_BLOCKPOLARSTRETCHACTION , _dwg_object_BLOCKSTRETCHACTION , _dwg_POINTCLOUDEX_Croppings
• num_radiuses : _dwg_object_ACSH_FILLET_CLASS
• num_ramps : _dwg_POINTCLOUDCOLORMAP_Ramp
• num_reactors : _dwg_object_entity , _dwg_object_object
• num_rows : _dwg_entity_INSERT , _dwg_entity_MINSERT , _dwg_entity_TABLE , _dwg_LinkedTableData , _dwg_object_DATATABLE , _dwg_TableCell
• num_rowstyles : _dwg_object_TABLESTYLE
• num_schemas : _dwg_AcDs_SchemaData
• num_search : _dwg_AcDs_Search
• num_sections : _dwg_header , _dwg_object_SECTION_MANAGER , _dwg_secondheader , Dwg_Section_Info , r2007_file_header
• num_seeds : _dwg_entity_HATCH
• num_segidx : _dwg_AcDs
• num_segparms : _dwg_MLINE_line
• num_segs_or_paths : _dwg_HATCH_Path
• num_silhouettes : _dwg_entity_3DSOLID , _dwg_entity_EXTRUDEDSURFACE , _dwg_entity_LOFTEDSURFACE , _dwg_entity_NURBSURFACE , _dwg_entity_PLANESURFACE , _dwg_entity_REVOLVEDSURFACE , _dwg_entity_SWEPTSURFACE , _dwg_object_ACSH_BREP_CLASS , _dwg_object_ASSOCASMBODYACTIONPARAM
• num_sortedidx : _dwg_AcDs_Search_Data
• num_source_files : _dwg_entity_POINTCLOUD
• num_sources : _dwg_SECTION_typesettings
• num_startsetbacks : _dwg_object_ACSH_FILLET_CLASS
• num_states : _dwg_object_BLOCKVISIBILITYPARAMETER
• num_steps : _dwg_object_ASSOCPERSSUBENTMANAGER , _dwg_object_PERSUBENTMGR
• num_strings : _dwg_appinfo
• num_subdiv_vertex : _dwg_entity_MESH
• num_subents : _dwg_object_ASSOCPERSSUBENTMANAGER , _dwg_object_PERSUBENTMGR
• num_submgrs : _dwg_object_CONTEXTDATAMANAGER
• num_tokens : jsmntokens
• num_types : _dwg_object_SECTION_SETTINGS
• num_unknown_bits : _dwg_object
• num_unknown_rest : _dwg_object
• num_uprops : _dwg_AcDs_SchemaData
• num_valuelist : _dwg_BLOCKPARAMVALUESET
• num_values : _dwg_AcDs_Schema_Prop , _dwg_ASSOCPARAMBASEDACTIONBODY , _dwg_object_ASSOC2DCONSTRAINTGROUP , _dwg_object_ASSOCACTION , _dwg_object_ASSOCNETWORK , _dwg_object_ASSOCVARIABLE
• num_vars : _dwg_VALUEPARAM
• num_vertex : _dwg_entity_MESH
• num_vertexids : _dwg_entity_LWPOLYLINE
• num_vertices : _dwg_POINTCLOUD_Clippings
• num_verts : _dwg_entity_MLINE , _dwg_entity_SECTIONOBJECT
• num_viewports : _dwg_object_LAYOUT
• num_widths : _dwg_entity_LWPOLYLINE , _dwg_PROXY_LWPOLYLINE
• num_wires : _dwg_3DSOLID_silhouette , _dwg_entity_3DSOLID , _dwg_entity_EXTRUDEDSURFACE , _dwg_entity_LOFTEDSURFACE , _dwg_entity_NURBSURFACE , _dwg_entity_PLANESURFACE , _dwg_entity_REVOLVEDSURFACE , _dwg_entity_SWEPTSURFACE , _dwg_object_ACSH_BREP_CLASS , _dwg_object_ASSOCASMBODYACTIONPARAM
• num_xdata : _dwg_object_XRECORD
• num_xrefpaths : _dwg_DIMASSOC_Ref
• num_xrefs : _dwg_DIMASSOC_Ref
• numassocsteps : _dwg_object_PERSUBENTMGR
• numassocsubents : _dwg_object_PERSUBENTMGR
• number : _dwg_class , _dwg_section
• numcols : _dwg_entity_ENDREP , _dwg_object_BLOCKLOOKUPACTION , _dwg_object_SUNSTUDY , _dwg_object_TABLEGEOMETRY
• numdashes : _dwg_object_LTYPE
• numelems : _dwg_object_BLOCKLOOKUPACTION
• numentities : _dwg_header_variables
• numentity_sections : _dwg_header
• numfaces : _dwg_entity_POLYLINE_PFACE
• numfragments : _dwg_entity_MTEXT
• numgaps : _dwg_R2004_Header
• numhandles : _dwg_objfreespace
• numheader_vars : _dwg_header
• numitems : _dwg_abstractobject_ASSOCARRAYPARAMETERS , _dwg_object_DICTIONARY , _dwg_object_DICTIONARYWDFLT
• numlayers : _dwg_LAYER_entry
• numlevels : _dwg_abstractobject_ASSOCARRAYPARAMETERS
• numnums : _dwg_objfreespace
• numoverrides : _dwg_object_TABLESTYLE
• numpoints : _dwg_entity_POINTCLOUD , _dwg_object_POINTCLOUDDEF , _dwg_object_POINTCLOUDDEFEX
• numrows : _dwg_abstractobject_ASSOCARRAYPARAMETERS , _dwg_entity_ENDREP , _dwg_object_BLOCKLOOKUPACTION , _dwg_object_SUNSTUDY , _dwg_object_TABLEGEOMETRY
• numsaves : _dwg_auxheader
• numsaves_1 : _dwg_auxheader
• numsaves_2 : _dwg_auxheader
• numsaves_3 : _dwg_auxheader
• numsaves_4 : _dwg_auxheader
• numsections : _dwg_R2004_Header
• numverts : _dwg_entity_POLYLINE_PFACE
• numvports : _dwg_object_SUNSTUDY
• NURBSURFACE : _dwg_object_entity