PROBLEM TO BE SOLVED: To provide a catalog display device, a catalog display program, a catalog display method, and a catalog display system, which enable catalog display in free combination of an exterior and an interior, and movement of the interior to an optional position.;SOLUTION: A catalog display device includes: an input content determination part for determining an input coordinate on a display part and content of an input operation from input content of a user received at an input part; a selection target determination part for determining catalog display data displayed at the input coordinate determined by the input content determination part as a selection target article selected by the user, and determining content of display on the display part corresponding to the selection of the selection target article; and a display data change part for changing content of the catalog display data to be displayed on the display part in accordance with the content of the input operation determined by the input content determination part and the display content determined by the selection target determination part.;COPYRIGHT: (C)2015,JPO&INPIT
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