本文件规定了基因组信息的信息元数据、辅助字段、SAM互操作性、保护元数据和编程接口。它定义了: —？ISO/IEC中规定的不同封装级别的元数据存储和解释23092-1（第6条）； —？在ISO/IEC中规定的不同封装级别提供保密性、完整性和隐私规则的保护元素23092-1（第7条）； —？如何将辅助字段与编码读取相关联（第8条）； —？与现有SAM内容向后兼容的机制，并导出到此格式（见附录C）； —？访问符合ISO/IEC编码的基因组信息的接口23092-1和ISO/IEC23092-2（第8.1款）。

This document specifies information metadata, auxiliary fields, SAM interoperability, protection metadata and programming interfaces of genomic information. It defines: —？metadata storage and interpretation for the different encapsulation levels as specified in ISO/IEC？23092-1 (in Clause？6); —？protection elements providing confidentiality, integrity and privacy rules at the different encapsulation levels specified in ISO/IEC？23092-1 (in Clause？7); —？how to associate auxiliary fields to encoded reads (in Clause？8); —？mechanisms for backward compatibility with existing SAM content, and exportation to this format (in Annex？C); —？interfaces to access genomic information coded in compliance with ISO/IEC？23092-1 and ISO/IEC？23092-2 (in subclause？8.1).