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。9303号文件第6部分以第三版9303号文件第3部分《机读公务旅行证件》第1卷（2008年）为基础。文件9303第6部分定义了TD2大小的机器可读公务旅行证件（MRTDs）的特定规范。

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 6 of Doc 9303 is based on the Third Edition of Doc 9303, Part 3, Machine Readable Official Travel Documents, Volume 1 (2008).Doc 9303, Part 6 defines specifications that are specific to TD2 size Machine Readable Official Travel Documents (MRTDs).