- o -

• object_drawing_format : dxf_acad_proxy_entity_struct
• object_id : dxf_acad_proxy_entity_struct
• object_list : dxf_drawing_struct
• object_schema_number : dxf_dictionaryvar_struct
• obl_angle : dxf_shape_struct , dxf_text , dxf_attdef_struct , dxf_attrib_struct , dxf_dimension_struct
• oblique_angle : dxf_style
• ObsColor : dxf_header
• ObsLType : dxf_header
• ole2frame_list : dxf_entities_struct
• ole_object_type : dxf_ole2frame_struct
• ole_version_number : dxf_oleframe_struct , dxf_ole2frame_struct
• oleframe_list : dxf_entities_struct
• OLEStartUp : dxf_header
• optional_text_string : dxf_table_cell
• order : dxf_proprietary_data_struct
• original_custom_object_data_format : dxf_acad_proxy_entity_struct
• OrthoMode : dxf_header
• OSMode : dxf_header
• outside_diameter : dxf_donut_struct
• override : dxf_table_cell
• override_flag : dxf_table_cell , dxf_table
• owning_block_pointer : dxf_table