We are committed to making this website accessible to all users, whatever the device, technology or ability. Visitors with visual impairments can use assistive technologies such as screen readers. Users with low vision can use the high contrast and text size options in the accessibility menu (Accessibility Statement).
If you have any problem or suggestion about the accessibility of this website, please send us your feedback.
| Screen reader | Website | Free / commercial |
|---|---|---|
| Screen Access For All (SAFA) | lists.sourceforge.net/lists/listinfo/safa-developer | Free |
| Non Visual Desktop Access (NVDA) | www.nvaccess.org | Free |
| System Access To Go | www.satogo.com | Free |
| Thunder | www.webbie.org.uk/thunder | Free |
| WebAnywhere | webinsight.cs.washington.edu | Free |
| Hal | yourdolphin.com | Commercial |
| JAWS | www.freedomscientific.com/products/software/jaws | Commercial |
| Supernova | yourdolphin.com | Commercial |
| Window-Eyes | www.gwmicro.com/Window-Eyes | Commercial |
Viewing information in various file formats
Some information on this website is in PDF, Word or image files. To view them, your device needs the right software. The table lists the plug-ins needed.
| Document type | Plug-in for download |
|---|---|
| Portable Document Format (PDF) files | Adobe Acrobat Reader |
| Word files (DOCX, ODT) | LibreOffice (free) or Microsoft Word |
Last updated on: 19 October 2026