BRLTTY Reference Manual

Access to the Console Screen for Blind Persons using Refreshable Braille Displays

Nikhil Nair <nn201@cus.cam.ac.uk>

Nicolas Pitre <nico@cam.org>

Stéphane Doyon <s.doyon@videotron.ca>

Dave Mielke <dave@mielke.cc>

1. Formalities

• 1.1 License
• 1.2 Disclaimer
• 1.3 Contact Information

2. Introduction

• 2.1 Feature Summary
• 2.2 System Requirements

3. The Build Procedure

• 3.1 Installed File Hierarchy
• 3.2 Installing from a TAR Ball
• 3.3 Testing BRLTTY
• 3.4 Starting BRLTTY
• 3.5 Security Considerations
• 3.6 Build and Run-Time Restrictions
• 3.7 Installing from an RPM File
• 3.8 Other Utilities

4. Using BRLTTY

• 4.1 Commands
• 4.2 The Configuration File
• 4.3 Command Line Options

5. Feature Descriptions

• 5.1 Cursor Routing
• 5.2 Cut and Paste
• 5.3 Pointer (Mouse) Support via GPM
• 5.4 Alert Tunes
• 5.5 Preferences Settings
• 5.6 The Status Display
• 5.7 Command Learn Mode

6. Translation Tables

• 6.1 Text Translation
• 6.2 Attributes Translation
• 6.3 Table Format

7. Contracted Braille

• 7.1 File Format
• 7.2 Opcodes

8. Advanced Topics

• 8.1 Installing Multiple Versions
• 8.2 Installation/Rescue Root Disks for Linux
• 8.3 Future Enhancements
• 8.4 Known Bugs

Appendix

9. Supported Braille Displays

10. Supported Speech Synthesizers

11. Driver Identification Codes

12. Supported Screen Drivers

13. Operand Syntax

• 13.1 Driver Specificationn
• 13.2 Braille Device Specificationn
• 13.3 PCM Device Specificationn
• 13.4 MIDI Device Specificationn

14. Standard Braille Dot Numbering Convention

15. North American Braille Computer Code

16. MIDI Instrument Table