| 摘要 |
A display request is received by user input to an input device (step S1). With reference to a database, referent data or reference source of data associated with an icon clicked upon the display request is extracted (step S2). When more reference source or referent data are present in the extracted data (YES in step S3), the process returns to step S2. When no reference source or referent data is present in the extracted data (NO in step S3), an icon associated with the extracted data is drawn as connected (step S4), and the icon is displayed on a display screen (step S5). |
