| http://www.w3.org/ns/prov#value | - Further, a hatching area 120 that delimits the white area 116 may be printed by ink black or other in color, the ink having to be capable of reflecting invisible light so that the presence of the player card 20 can be detected. [0216]FIG. 20 is a figure showing a variation of the player card 20. [0217] As shown in FIG. 20, a card point 122 formed by a black dot is printed in the four corners of th
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