| http://www.w3.org/ns/prov#value | - The light absorbing wall or coating or material 257??? may comprise any suitable light absorbing material or layer or element, such as a dark or opaque wall or coating established around the block 258???, such as a dark plastic or a black or dark-colored paint, or it may be a light reflecting but substantially non-light transmitting material or layer so that any stray light incident on such walls
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