To use the tool, you first use Purity to instrument your program.
要使用这个工具，您首先要利用 Purity 来测试您的程序。
2
When you instrument your program, Purify provides the real definitions for the API functions, and stubs are ignored.
当您测试您的程序时，Purify将会提供整个真实的api函数定义，而存根会被忽视。
3
There are many different practice area airports, which gives you an inside in the same class at several different airports experience more instrument training program.