1.1本标准旨在促进表示二维平面图案件的CAD/CAM系统之间的通信。该标准还提供了表示相关信息的约定，如等级规则表。本标准不代表图案块之间的关系，也不代表2D或3D缝制产品图案块几何形状之间的对应关系。 1.2本标准（规程D6673）定义的图案数据交换文件的文件格式符合图纸交换文件（DXF）格式。Autodesk，股份有限公司开发了DXF格式，用于在其AutoCAD（r）产品和其他软件应用程序之间传输数据。本标准记录了在DXF格式内表示图案数据的方式。 本标准的用户应拥有Autodesk，Inc.关于图形交换文件的文档，可在AutoCAD参考手册中找到，以确保与所有DXF格式规范兼容。将使用AutoCAD版本13 DXF规范。等级规则表交换文件的文件格式为ASCII文本文件。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 ====意义和用途====== 本标准实践旨在促进以下两个方面:- 在图案设计级别，CAD系统之间的尺寸、缝合图案块数据交换。它还促进了服装行业缝制产品的等级规则表数据交换。它使用DXF文件格式进行图案块数据交换，使用特殊格式的ASCII文件格式进行等级规则表。它仅限于样式内的图案块以及相关图案块和样式信息的传输。它不支持数字刀具指令的传输；绘图仪说明、完整的标记铺设或传播信息或产品数据规范信息。

1.1 This standard is designed to facilitate communication between CAD/CAM systems that represent two-dimensional flat pattern pieces. This standard also provides conventions for representing related information such as grade rule tables. This standard is not intended to represent the relationships between pattern pieces or the correspondence between 2D or 3D sewn product pattern piece geometries. 1.2 The file format for the pattern data exchange file defined by this standard (Practice D6673) complies with the Drawing Interchange File (DXF) format. Autodesk, Inc. developed the DXF format for transferring data between their AutoCAD(r) product and other software applications. This standard documents the manner in which pattern data should be represented within the DXF format. Users of this standard should have Autodesk, Inc.'s documentation on Drawing Interchange Files, found in the AutoCAD Reference Manual, in order to assure compatibility to all DXF format specifications. The AutoCAD Version 13 DXF specification is to be used. The file format for the grade rule table exchange file is an ASCII text file. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== This standard practice is designed to facilitate two-dimensional, sewn pattern piece data exchange between CAD systems at the level of pattern design. It also facilitates grade rule table data exchange for sewn products in the apparel industry. It uses the DXF file format for pattern piece data exchange and a specially formatted ASCII file format for grade rule tables. It is limited to the transfer of pattern pieces within a style and the associated pattern piece and style information. It does not support the transfer of numerical cutter instructions; plotter instructions, complete marker-laying or spreading information, or product data specification information.