A?E? ?K?S?Z?p?o?n?s?o?r? ?Q?W?e? ?X?d?Z? ??W??four? ?B??A cloth membrane is 'stretched' to sort a three-dimensional area That could be made use of to produce a roof, shading, or ornamental ingredient. In some cases described as 'present day tents', material constructions use hardly any materials as compared to other kinds of building, and are gener