Glossary

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ABC Notation(also: ABC Text, ABC Music Notation)

A shorthand ASCII text format for representing music notation using plain characters that can be read directly by screen readers. In ABC notation, pitch is represented by letters (A-G for different octaves), rhythm by numbers and fractions, and musical elements like key…

AI-Generated Content(also: AIGC)

An umbrella term for text, images, audio, video, and other media produced by generative AI systems — especially large language models and diffusion-based text-to-image or text-to-video models — in response to user prompts. AIGC is widely used in creative tooling (backdrop…

ATAG(also: Authoring Tool Accessibility Guidelines)

A W3C standard that provides guidelines for making authoring tools—such as content management systems, HTML editors, and website builders—both accessible to authors with disabilities and capable of producing accessible content. ATAG 2.0, published in 2015, is organized into two…

Accessible Content Creation(also: Accessible Authoring)

The design of tools, workflows, and processes that enable people with disabilities to create original content — including visual illustrations, documents, presentations, and multimedia — independently and with full creative control. Traditional content creation tools often rely…

Alt Text Authoring(also: Alt Text Writing, Image Description Authoring)

The process of composing alternative text descriptions for digital images, undertaken by content authors, developers, or dedicated accessibility specialists. Research has identified several barriers to effective alt text authoring, including authors not knowing what to include,…

Artboard(also: Canvas, Slide Canvas, 2-D Canvas)

An artboard is a two-dimensional digital workspace used in presentation software (PowerPoint, Google Slides, Keynote), graphic design tools, and whiteboard applications where objects like text boxes, shapes, images, and connectors can be placed at arbitrary positions. Artboards…

Audio Description Authoring(also: AD Authoring, AD Creation, Description Writing)

The process of writing and producing audio descriptions for video content, live performances, or other visual media. AD authoring involves watching content, identifying key visual elements, writing concise and objective descriptions, timing them to fit within available gaps, and…

Authoring Tool Accessibility Guidelines (ATAG)(also: ATAG, ATAG 2.0)

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.…

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