Authoring Tool Accessibility Guidelines (ATAG)

A W3C Web Accessibility Initiative standard that provides guidelines for designing authoring tools — such as content management systems, website builders, and code editors — that are both accessible to authors with disabilities and capable of producing accessible web content. ATAG 2.0 has two parts: Part A addresses making the authoring tool interface accessible, and Part B addresses supporting the production of accessible content. ATAG is a critical complement to WCAG because even if developers understand accessibility guidelines, inaccessible authoring tools can make it difficult or impossible to create conformant content.