PDF/UA, the International Standard for accessible PDF based on ISO 32000-1 was first published as ISO 14289-1 in 2012, and establishes normative language for accessible PDF technology.
基于ISO 32000-1的可阅读PDF国际标准PDF/UA在2012年以ISO 14289-1发布，并为可阅读PDF技术建立规范的语言。