本文件根据Ada编程语言的语法和语义，提供了反映程序设计语言（PDL）特性最佳实践的最新技术和替代方法的建议。在本推荐规程中，这些被称为Ada PDL。

This document provides recommendations reflecting the state of the art and alternate approaches to good practice for characteristics of Program Design Languages (PDLs) based on the syntax and semantics of the Ada Programming Language. In this recommended practice, these are referred to as Ada PDLs.