Codablock-F — format provenance and usability
================================================

This file records the public engineering basis for the Codablock-F support in
Sythos Barcode Universal. It is not legal advice and does not grant a patent,
trademark or standards licence.

Format background
-----------------

Codablock-F is a stacked 2D barcode built from Code 128 symbols. Public format
descriptions identify a row count of 2–44, a row-level Code 128 check and two
overall modulo-86 checks. The implementation uses those structural properties
with original Sythos TypeScript and generated JavaScript.

Patent and trademark status
---------------------------

[REGISTRY CHECK REQUIRED] The project has not established a definitive current
patent-family, term or trademark position for every Codablock-F jurisdiction.
The format name is used descriptively. Users with a regulated or commercial
deployment must obtain their own legal and standards review.

Implementation boundary
----------------------

The writer and reader are original MIT-licensed Sythos work. They share the
project's Code 128 alphabet and enforce row framing, row checks, overall checks
and complete-row reconstruction. The implementation is intentionally
conservative: clean integer-scale symbols are supported, while arbitrary
perspective, severe damage and multi-symbol scenes are not promised.

Third-party software such as ZXing or BWIPP, when used by maintainers, is used
only as an independent black-box validation tool. No third-party source code,
tables or runtime dependency is copied or shipped in this SDK. Please open a
GitHub issue with any contrary note, patent concern or format correction so it
can be reviewed and recorded.

License of this implementation
-------------------------------

The original implementation is distributed under the MIT License in the
repository root. The format's external names and rights remain separate from
the SDK licence.

References
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- Public Codablock-F symbology descriptions, including row and check layout.
- Code 128 public descriptions for the underlying symbol alphabet.
- `NOTICE.md` attribution and verification log in this repository.