Pure-Lua library to validate ISBN numbers, correct invalid checksums, format them using the standard arrangement of hyphens, compare them for equivalence, and extract individual parts of the value. Handles ISBN-10 and ISBN-13, as well as ISSN codes.

• Development Status: 5 - Production/Stable
• Intended Audience: Developers
• License: MIT/X Consortium License
• Natural Language: English
• Operating System: OS Independent
• Programming Language: Lua 5
• Topic: Point-Of-Sale