EAN-13	9780810391925
Product Name	Nineteenth Century Literary Criticism: Cumulative Title Index To Volumes 1-38
Language	English
Category	Book / Magazine / Publication
Short Description	Paperback
Created	11-11-2012 2:08:18pm
Modified	09-09-2018 10:04:17am
MD5	9a452f8c9a2e9ce2d53bcad4089c3423
SHA256	e3ac29e2f1e9b29bbf7403657dbd163f9ec39d31e50da6d7aa1d2cd798ee0a6b
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Article of interest

Royal Mail 4-State Customer Code is used for the Royal Mail Cleanmail service. It enables UK postcodes as well as Delivery Point Suffixes (DPSs) to be easily read by a machine at high speed.

Each character is made up of 4 bars, 2 of which extend upward, and 2 of which extend downward. The combination of the top and bottom halves gives 36 possible symbols: 10 digits and 26 letters.

As the example right shows, the barcode consists of a start character, the postcode, the Delivery Point Suffix (DPS), a checksum character, and a stop character. The DPS is a two-character code ranging from 1A to 9T, with codes 9U to 9Z being accepted as default codes when no DPS has been allocated