WCAG 2.2 builds on and is backwards compatible with WCAG 2.1, meaning web pages that
               conform to WCAG 2.2 are at least as accessible as pages that conform to WCAG 2.1.
               Requirements have been added that build on 2.1 and 2.0. WCAG 2.2 has removed one success
               criterion, 4.1.1 Parsing . Authors that are required by policy to conform with WCAG 2.0 or 2.1 will be able
               to update content to WCAG 2.2, but may need to continue to test and report 4.1.1.
               Authors following more than one version of the guidelines should be aware of the following
               additions. New Features in WCAG 2.2 WCAG 2.2 extends WCAG 2.1 by adding new success criteria, definitions to support them,
                  and guidelines to organize the additions. This additive approach helps to make it
                  clear that sites which conform to WCAG 2.2 also conform to WCAG 2.1.