A customer is using the full-screen thumbnail display, and they are sizing the thumbnails up as large thumbnails. They're noticing that, under certain circumstances (for example, if the window isn't long enough), their thumbnails wrap around to a second row. But, they would prefer that the thumbnails always maintained their same position in the view and perhaps have a scrollbar to allow scrolling the dispaly to the right to see the remaining ones.
Having this capability would give customers control over how the thumbnails of their documents will be presented to their end users.