A number of nodes including one or more of true, optional, and numerical nodes corresponding to the true, optional, and numeric variables used in the inference theory of the expert system, and any two nodes among the multiple nodes are connected. It expresses the connection relationship of the web page in the form of a graph consisting of a number of connection lines, and implements the connection relationship through a script language or form input or anchor to automatically generate the source code of each web page constituting the Welfare Mall website. . In addition, for a welfare mall web site that has already been formed, it is possible to obtain the source code using HTTP commands, analyze it, and display it in the form of a graph.
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