 application usually needs an exclusive selection but also desires to let the user select multiple items for bulk operations. Multiple selections are stored as lists of items.</P>
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For example, a disk copy operation may have an extended-selection list to specify the drive to copy a file to. In most cases, the user will only want to copy to one drive, and the list normally operates in exclusive mode to accommodate this. By extending the selection, however, the user can request the list to copy the file to