. "300404633" . "2016-04-28T08:51:22"^^ . . "metal point (technique)"@en . . "metalpoint (technique)"@en . . "The technique of using a metal rod, usually in a holder, to write or draw on a surface, often paper, parchment, or wood that has been covered by a ground. Ivory is another common support. As the point moves across the surface, it leaves behind a thin layer of the metal, which quickly oxidizes. For example, lines from silver points becomes the brownish grey of tarnished silver and lines from lead points becomes very dark."@en . "2016-04-28T13:33:11"^^ .