Glossary

The European Standard EN 301 549 (PDF) (external link) illustrates the relationship between the accessibility criteria and the accessibility requirements of users. So-called functional performance statements can be assigned to the criteria. 11 functional performance statements are defined:

• Use without vision
• Use with limited vision
• Use without color perception
• Use without hearing
• Use with limited hearing
• Use without voice
• Use with limited handling or force
• Use with limited range
• Minimizes triggers for light-sensitive seizures
• Use with cognitive limitations
• Privacy

If an accessibility criterion partially supports a functional performance statement because some users may use the function in certain situations, then there is a secondary relationship.