| http://www.w3.org/ns/prov#value | - When it is determined that an action command defined by the broadcasting station is input, a script (not shown) described in the content corresponding to the action command is executed (step S3-11 in FIG. 3). [0077] The action command defined by the broadcasting station refers to an action such as performing a page switching a predetermined time later, or modifying the display form. [0078] Present
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