Doc 9303第七版代表了国际民航组织机器可读旅行规范的重组 文件。在没有对规范进行实质性修改的情况下，新版Doc 9303已重新格式化为一号机读公务旅行证件（TD1）、二号机读公务旅行证件（TD2）和三号机读旅行证件（TD3）以及签证的一套规范。这套规范由各种单独的文件组成，其中包括通用规范（适用于所有MRTD）和MRTD形状系数特定规范。Doc 9303第7部分基于Doc 9303第三版第2部分机器签证（2005年）。第7部分定义了允许兼容性和全局交换的机器可读签证（MRV）规范 使用视觉（眼睛可读）和机器可读的方式。这些规范规定了签证的标准，如果签证由一个国家签发并被接受国接受，则可用于旅行目的。MRV应至少以可视和光学字符识别方法可辨认的形式包含本文规定的数据，如本文所示。第7部分包含A格式和B格式签证的规范。

The Seventh Edition of Doc 9303 represents a restructuring of the ICAO specifications for Machine Readable Travel Documents. Without incorporating substantial modifications to the specifications, in this new edition Doc 9303 has been reformatted into a set of specifications for Size 1 Machine Readable Official Travel Documents (TD1), Size 2 Machine Readable Official Travel Documents (TD2), and Size 3 Machine Readable Travel Documents (TD3), as well as visas.This set of specifications consists of various separate documents in which general (applicable to all MRTDs) as well as MRTD form factor specific specifications are grouped.This Part 7 of Doc 9303 is based on the Third Edition of Doc 9303, Part 2, Machine Visas (2005).Part 7 defines the specifications for machine readable visas (MRV) which allow compatibility and global interchange using both visual (eye readable) and machine readable means. The specifications lay down standards for visas which can, where issued by a State and accepted by a receiving State, be used for travel purposes. The MRV shall, as a minimum, contain the data specified herein in a form that is legible both visually and by optical character recognition methods, as presented herein. Part 7 contains specifications for both Format-A and Format-B types of visas.