0 According to my dictionary roofing litterally means 'for the roof', so a roofing stone should be a special stone used for a roof; in fact a rag is a 'slate', a kind of stone very much used for covering 0-
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01cite10Francesca12cite10According to my dictionary roofing litterally means 'for the roof', so a roofing stone should be a special stone used for a roof; in fact a rag is a 'slate', a kind of stone very much used for covering12blockquote10 01b01font00I learn something new here ne