| 摘要 |
In response to the designation of a rectangular partial region of an original picture to be reproduced, the designation of a rectangular partial region of the displayable picture at the reproduction end, and information corresponding relationship between the displayable picture and the original picture that an image of a certain region of the displayable picture and of the original picture are equivalent to each other, an instruction is generated for a reproduction operation to reuse part of the displayable picture, as it is reusable as part of the region at the reproduction end, and to reproduce from the original picture a region at the reproduction end in order to reproduce a part of the original picture in the displayable picture.
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