Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Composite Figure(also: Multi-panel Figure, Multi-element Figure)
- A figure that contains multiple distinct visual elements combined into a single image, such as a series of screenshots labeled (a) through (f), a set of charts showing different data sets, or a mix of photographs and diagrams. Composite figures present a significant…
- Content Element(also: Visual Content Element, Non-Text Content)
- A visual component within a document that conveys information beyond running text, including tables, charts, images, diagrams, equations, and code blocks. Content elements are often chosen for their ability to communicate complex information concisely and visually, but they…
- Content tagging(also: Structural tagging, Semantic tagging)
- The process of adding structural markup to document content that identifies the role and meaning of each element. In PDF accessibility, content tagging involves marking regions of a document as paragraphs, headings, lists, tables, figures, or artifacts so that assistive…
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