Editing MaxiCode (section)

==Structured Carrier Message==
[[Image:MaxiCode Regions.svg|thumb|400px]]
MaxiCode symbols using modes 2 and 3 include a ''Structured Carrier Message'' containing key information about a package. This information is protected with a strong [[Reed–Solomon error correction]] code, allowing it to be read even if a portion of the symbol is damaged. These fields include:

# A 4-bit indication of the mode in use, currently either mode 2 or mode 3.
# A national or international [[postal code]].  MaxiCode supports both numeric postal codes (e.g. a [[ZIP Code]]), and alphanumeric postal codes.
# A 3-digit [[country code]] encoded per [[ISO 3166]]
# A 3-digit class of service code assigned by the carrier

The structured portion of the message is stored in the inner area of the symbol, near the bull's-eye pattern. (In modes that do not include a structured portion, the inner area simply stores the beginning of the message.)