摘要： 程序理解是软件开发过程中一项重要活动，为了保证该活动的准确性和高效性，有理解工具的半自动支持是很关键的．青鸟Ｃ＋＋程序理解工具（ＪＢＰＣ－Ｃ＋＋）支持用户的多样需求，辅助多种理解策略，为用户理解程序提供了很大帮助．该文概要介绍了青乌Ｃ＋＋程序理解工具（ＪＢＰＣＴ－Ｃ＋＋）的设计目标和原则、体系结构以及基本功能．

关键词: 程序理解, 增量分析, 理解视图, 逆向文档

Abstract: Program comprehension is an important process in software development. In order to do it correctly and effectively, it is necessary to develop program comprehension tools offering semiautomatic support. Jade Bird C++ Program Comprehension Tool meets user's various requirement and supports general-purpose comprehension strategy. This paper introduces the tool's design goals and principles, arthitecture and major functions.