| 摘要 |
A bendable sheet of material includes a column of apertures disposed along each opposed vertical side and support structure for suspending the sheet from its upper edge. A pair of clips, secured to the lower edge of the sheet, penetrably cooperate with the columns of apertures to selectively retain the sheet foldable upon itself to a predetermined degree. The pair of clips are adapted to penetrably engage a further fold of the folded part of the sheet to selectively further reduce the area defined by the suspended sheet.
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