| 摘要 |
PROBLEM TO BE SOLVED: To improve quality of centralized management of a user program derived from editing of a program to be developed. SOLUTION: In a step 11, revision difference information is provided by comparing programs for every line before and after revision and extracting lines of difference where addition, substitution and deletion are made. In a step 12, presence of competition with program of each edition is determined by comparing edition difference information and revision difference information of each edition for every line and determining presence of duplicated lines. In a step 13, a competition message with the program of each edition is output according to the competition presence determination in the step 12. In a step 14, a version is changed and the revision difference information and a number of versions are respectively registered as plate information according to the competition absence determination in the step 12. COPYRIGHT: (C)2004,JPO
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