A11ying with Sanna - Web Content Accessibility Guidelines a guide to the accessibility requirements
1 Perceivable

1.3.6 Identify Purpose

Conformance level: AAA
Criterion released in WCAG version: 2.1

Official description of the success criterion

In content implemented using markup languages, the purpose of user interface components, icons, and regions can be programmatically determined.

What to do?

Ensure that the purpose of user interface components, icons, and regions can be programmatically determined.

Why is it important?

This criterion helps assistive technologies understand and communicate the purpose of different elements on a webpage to users. By programmatically identifying the purpose, users with disabilities can interact with content more effectively, as their assistive technologies can provide appropriate feedback and support. This is especially useful for users with cognitive or visual impairments who rely on such technologies to navigate and understand web content.

More about this criterion elsewhere