The Concepts sections provides information on:

• Overview
• Barcode Specifications
• • Checksums
  • Boundary and Point Properties
  • Code39StartStopPatternsAreMandatory
  • Barcode Types
  • • Add 2 and Add 5 Barcode Specifications
    • Australian Post 4-State Barcode
    • Aztec
    • BCD Matrix
    • Codabar
    • Code 32
    • Code 39
    • Code 39 Extended
    • Code 93
    • Code 93 Extended
    • Code 128 and EAN 128
    • DataLogic 2 of 5
    • Data Matrix
    • EAN-8
    • EAN-13 and JAN
    • GS1 DataBar
    • IATA 2 of 5
    • Industry 2 of 5 (Industrial 2 of 5)
    • Intelligent Mail
    • Interleaved 2 of 5
    • Inverted 2 of 5
    • Matrix 2 of 5
    • MicroPDF417
    • Patch Code
    • PDF417
    • PLANET
    • PostNet
    • QR Code
    • Royal Post 4-State Barcode
    • UPC-A
    • UPC-E
    • UPU S18 4-State Barcode
• Glossary