| 摘要 |
A system and method of obtaining information from a price look-up (PLU) file which employ an application programming interface which isolates application programs from each other. The system preferably includes a storage medium containing the PLU file, a computer coupled to the storage medium, control software executed by the computer, an application programming interface (API) having hooks into the control software, and a program executed by the computer which attaches into the API via interprocess communications for obtaining information for an item from the PLU file.
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