| 摘要 |
Articles to be mailed under bulk mail rates are stacked in accordance with their zip code. Articles with identical zip codes are bundled in numbers according to postal regulation minimum and maximum limits. When the number of articles in a zip code group is less than the postal minimum for a bundle, the zip code group is diverted for special handling. The system is capable of identifying consecutive zip code groups of articles each of which are under the postal minimum for a stack and bundling these together in the main stream as long as together the consecutive groups are over the minimum.
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