Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- On-Screen Text(also: OST, Visual Text, Burned-In Text)
- Text that appears visually within video content, including titles, subtitles, captions, signs, labels, credits, and any other written information displayed on screen. On-screen text must be read aloud or referenced in audio descriptions to ensure BLV users have access to this…
- Open Captions(also: Burned-in Captions, Hard-coded Captions)
- Captions that are permanently embedded into a video and cannot be turned off by the viewer. Unlike closed captions, which can be toggled on or off, open captions are always visible as part of the video image itself. Open captions are sometimes used when a platform does not…
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