出自UXGuide.net

数据片段

Clippings

When an item is dragged from an application to the desktop, a clipping is created that contains the data in the dragged item. If discontinuous selections are dragged from a source to the Finder, a separate clipping is created for each selected item.

当一个对象从程序中拖到桌面上时，一个包含被拖拽对象的数据的片段会被创建。如果非连续的选择区域被拖拽到Finder时，每个选定的对象都会 对应一个数据片段被创建。

Your application should provide a number of representations (such as TEXT, PICT, and native formats) to ensure flexibility with different subsequent destinations. Regardless of which representations are stored, round-trip data integrity should be preserved; a clipping dragged back into its source should be identical to the original item.

您的程序应该为拖拽的多种目标区域提供灵活的格式（如TEXT，PICT，或者本地格式）。无论哪种格式被存储，您都必须保证循环数据的一 致性；从数据片段拖拽回的数据应该和源数据一致。