这些形状用来表示内容在网站的布局区域。
These shapes represent areas of the site where content will reside.
表示内容库对象的类是IBM Cognos 8 SDK应用程序最关心的类。
The classes that represent Content Store objects are the ones that an IBM Cognos 8 SDK application will be concerned with the most.
因此，中间层逻辑会更紧凑，它只关注业务逻辑，而不需要承担向浏览器传递表示内容的责任。
This results in a compact mid-tier logic that focuses purely on the business logic rather than carrying the additional load of delivering presentation content to the browsers.
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