| http://www.w3.org/ns/prov#value | - Structure as in claim 1 wherein said structure for receiving a tab comprises a groove formed as part of said edge, said groove having sides and a back surface, said sides being angled from said groove so as to form relative to said back surface an angle of less than 90?? with said back surface, the portion of each side furthest from said back surface being closer to each other than the portion of
|
