Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Raised-Line Drawing(also: Raised-Line Picture, Tactile Line Drawing, Embossed Line Drawing)
- A raised-line drawing is a tactile representation of a visual image created by producing elevated lines on a surface that can be felt by touch, enabling blind and visually impaired people to perceive graphical information through their fingertips. Raised-line drawings can be…
- Reference Sonification(also: Audio reference tone, Origin tone)
- A sonification design pattern in which a fixed, recognisable audio tone represents a known landmark - typically the origin of a coordinate system or another anchor point - and can be re-played on demand so that a user exploring a non-visual data space can re-orient themselves…
- Relational Diagram(also: Relational Information Display, RID)
- A graphical representation that depicts items (nodes) and the relationships (links) between them using a two-dimensional spatial layout. Common forms include entity-relationship diagrams, flowcharts, state diagrams, network diagrams, and mind maps. Relational diagrams encode…
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