| 摘要 |
Analyzing blocks of a conversion source program one block by one block, a function directed by one or more blocks are extracted. Then one or more blocks in a conversion destination program, which correspond to the extracted function, is extracted. In this manner, the conversion source program is converted. The one or more blocks in the conversion source program and the one or more blocks in the conversion destination program, which correspond to the function, are displayed side by side on a screen so as to allow an operator to easily recognize the correspondence between them.
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