| 摘要 |
A method includes acquiring creation support information for creating the buying/presenting information in a data format of the control program at the purchasing center, creating the buying/presenting information based on the creation support information, obtaining the buying/presenting information at the user apparatus, recording the obtained buying/presenting information on a recording medium at the user apparatus, and reading out the buying/presenting information from the recording medium in accordance with an initially set condition and selectively transmitting the buying/presenting information to the plurality of extension terminals at the user apparatus.
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