| http://www.w3.org/ns/prov#value | - Preferred forms of the invention will now be described with reference to the accompanying diagrammatic drawings, in which: FIGURES 1, 2 and 3 are respectively a front elevation, side elevation and rear elevation of a fastener according to the invention, FIGURES 4 and 5 are respectively a side elevation, partly in section, and a rear elevation showing curtaining material attached to a curtain wire
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