A thumbnail image includes at least one selectable element. The selectable element
may be selected, or the document as a whole may be selected. The selectable element
is associated with either (a) a portion of the original document, smaller than
the original document as a whole or (b) a document other than the original document.
When the thumbnail as a whole is selected, the original document is displayed.
When the selectable element is selected, the appropriate portion of the original
document, or the document other than the original document, is displayed.