When considering how to produce accessible content it is vital that all areas of the publishing ecosystem are taken into consideration as they all have a role to fulfil. Every publishing organisation works slightly differently so we cannot advise on a definitive method of assigning tasks, but this page endeavours to give you pointers as| Publishing Accessibility Action Group
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This specification specifies content conformance requirements for verifying the accessibility of EPUB® Publications. It also specifies accessibility metadata requirements for the discoverability of EPUB publications.| www.w3.org
THE EUROPEAN PARLIAMENT AND THE COUNCIL OF THE EUROPEAN UNION,| eur-lex.europa.eu