The drag-and-drop feature is something we have come to expect out of desktop applications, but it is not seen as often in Web applications.
拖放特性在桌面应用程序中非常常见，但是在Web应用程序不常见。
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Because I masked out the BASE FILES group, I can simply drag the SKY group below the BASE FILES group and shift and scale the location until I get something that looks good.