| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve the upgrading of software without damaging the usability of a user. Ž<P>SOLUTION: A difference display system includes: a syntax difference extraction part configured of a series of steps of: syntax analysis, difference extraction by line unit, the mapping of the difference of the line unit and syntax elements, and the propagation of a hierarchical difference to the upper layer following the hierarchy of the syntax elements with respect to the source code before the upgrading of software and the source code after the upgrading of software; a UI extraction part for generating a calling relation tree concerning changed functions, and for retrieving UI elements linked to the calling of the changed functions by tracing the calling relation tree; and an explanation UI component insertion procedure part for specifying a proper UI component for explanation by detecting the pattern of the type and change of an UI element, and for embedding the specified component in a source code. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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