Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Semantic Level(also: Semantic Content Level, Alt Text Semantic Level)
- A framework for categorizing the depth of information conveyed in alt text descriptions of data visualizations, introduced by Lundgard and Satyanarayan. The four levels are: Level 1 (construction details such as chart type, axes, and encodings), Level 2 (statistical properties…
- Stable Systems of Access
- Access ecosystems where a disabled person can reliably anticipate available resources, plan long-term, and accumulate stability over time. In a stable system, stakeholders are predictable, resources are consistently available, and the person can make informed decisions about…
- Systems of Access
- A conceptual framework describing the dynamic network of people, institutions, environments, and resources that disabled people navigate to meet their needs. Unlike linear models of accessibility that focus on removing individual barriers, systems of access recognizes that…
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