首先创建一个业务逻辑，当您通过宏从大型机应用程序收集所有必要的数据时，这个业务逻辑会被触发。
Start by creating the business logic that gets triggered when you collect all the necessary data from the mainframe application through macros.
一个配置文件(称为hats宏)定义主机应用程序屏幕必需的数据。
A configuration file (called a HATS macro) defines the data that is required from the screens of the host application.
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