Editing PostBar (section)

==PostBar formats==
Canada Post uses nine different formats of PostBar codes&mdash;three "domestic" barcodes, used on mail within [[Canada]], two "global" codes, used to route mail outside Canada, three "service" codes, used on customer-applied barcodes, and an "internal" code, used for testing, maintenance, and tracking purposes by Canada Post.

Each barcode begins and ends with an identical pair of bars, known as "start" and "stop" fields.  These are made up of one ascender and one tracker.  The Data Content Identifier is always the first character after the start field.

Placeholders used to detail each PostBar format below are A, N, Z and B for the character sets described above, * for the start and stop fields, # for a space character (two full-height bars followed by one tracker), and [RS-''nn''] for the error-correction field, where ''nn'' is the number of bars used.  Bold Z's indicate DCIs.

===Domestic===
DCI's used in domestic barcodes fall within the range of A–L.
*PostBar.D07: * '''Z''' ANANAN [RS-12] *
*PostBar.D12: * '''Z''' ANANAN ZZZZ # [RS-12] *
*PostBar.D22: * '''Z''' ANANAN ZZZZZZZZZZZ [RS-12] *

===Global===
DCI's used in global barcodes fall within the range of 1–9.
*PostBar.G12: * '''Z''' NNN ZZZZZZZZ [RS-12] *
*PostBar.G22: * '''Z''' NNN ZZZZZZZZ ZZZZZZZZZZ [RS-12] *

===Service===
DCI's used in service barcodes fall within the range of M–U.
*PostBar.S06: * '''Z''' ZZZZZ [RS-12] *
*PostBar.S11: * '''Z''' ZZZZZZZZZZ [RS-12] *
*PostBar.S21: * '''Z''' Z ZZZZZZZZZZZZZZZZZZZ [RS-12] *

===Internal use===
DCI's used in internal barcodes fall within the range of V–Z.
*PostBar.C10: * '''Z''' ANANAN [RS-30] BBBB *

===Business reply mail===
52 bar long 4-state barcodes are used by Canada Post for business reply mail (BRM) addressing and payment.<ref>{{cite web|title=Designing Business Reply Mail|url=https://www.canadapost.ca/tools/pg/3_Designing/PSbrm-e.pdf|publisher=Canada Post|accessdate=18 February 2016|date=11 Jan 2016}}</ref> As of 2013 or earlier the previous BRM barcode, which were [[Code 93]]-type barcodes, were deemed non-machineable.<ref>{{cite web|title=Machineable Standard (S/L) Business Reply Mail|url=https://www.canadapost.ca/cpo/mc/assets/pdf/rates/2013_machineable_standard_brm_ef.pdf|publisher=Canada Post|accessdate=18 February 2016}}</ref>
An extended 73 bar long BRM barcode '' 'C73' '', scheduled for availability from 2011, was indefinitely postponed.<ref>{{cite web|title=Business Reply Mail Changes FAQ|url=https://www.canadapost.ca/cpo/mc/business/productsservices/marketing/brm/faq.jsf#B8|publisher=Canada Post|accessdate=18 February 2016}}</ref>