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Glossary

Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.

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NCAM(also: National Center for Accessible Media)
A research and development facility at WGBH (Boston public media) that develops accessible media technologies and guidelines. NCAM created widely-adopted guidelines for describing STEM images (charts, graphs, diagrams) for people with visual impairments, developed through expert…
NIMAS(also: National Instructional Materials Accessibility Standard)
A technical standard in the United States that defines a consistent file format for producing accessible versions of print instructional materials. NIMAS is based on the DAISY/NISO standard and specifies how publishers must provide source files so they can be converted into…
National Transition Strategy (NTS)(also: NTS, Web Accessibility National Transition Strategy)
The Australian Government's National Transition Strategy was a formal policy established in June 2010 requiring all federal, state, and territory government websites to conform to WCAG 2.0. It set staged milestones — Level A conformance by December 2012 and Level AA by December…
Nemeth Code(also: Nemeth Braille Code for Mathematics and Science)
A specialized braille code developed by Abraham Nemeth for representing mathematics, science notation, and technical symbols. Nemeth Code provides a comprehensive system for expressing equations, fractions, subscripts, superscripts, and other mathematical constructs in braille.…

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