1. Corrected Serial Number Prefixes 99IEB and 99IEC.

2. Updated 1-047 command as reprinting is supported in Demo and Simulation modes.

3. Corrected 4-014/67 inverted descriptions.

4. Updated 4-014 and 4-015 default values.

5. Added references to "Buono Celiachia".

6. Updated 3-103 and 3-104 commands to include DOC TYPE 6 (electronic payments filter).

7. Updated 3-104 command to include multiple frame mode.

8. Added totalisers 86 and 87 to 2-050/2-051 command.

9. Added E-Receipt references.

10. Added 4-015/28, 4-015/29, 4-215/28 and 4-215/29 E-Receipt parameters.

11. Added 1-131, 1-132, 1-133, 1-332, 1-333 and 9-226 E-Receipt commands.

12. Updated 9-016 command to include E-Receipt files.

13. Expanded 1-084, 4-031, 9-022 and 9-222 commands.

14. Expanded common errors table.

15. Added 273 (EMISSION MODE) and 274 (CLIENT ID) key functions.

16. Added CORS Origin setting to commands 4-034 and 4-234. Default = * (asterisk).

17. Expanded APPENDIX B and E.

18. Updated and expanded "4.1. Operating Modes" and "4.2 Demo and Simulation Modes" chapters.

19. Created separate TX and RX tables throughout.

20. Added 1-108 command.

21. Maximum number of fiscal daily closures figure corrected from 3653 to 3650.

22. Document updated throughout.

1. Introduction

2. Modes, States and Transitions

3. Document Types

4. Physical Level

5. Data Link Level (ACK and PDU)

6. Application Level

7. Errors

8. Data Communication Exchanges

9. Document Layouts

10. Special Documents

11. H1, H2, H3, H4 and H9 Commands and Responses with Fields

12. Firmware Cross-Reference Tables

13. Keyboard Configuration

14. Character Sets and Limits

15. Commands to Read and Print from MPD (EJ)

16. PLU

17. Error 02 Low Paper Behaviour

18. Historical VAT

19. Rounding