Glossary

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SAE Automation Levels(also: SAE J3016, Levels of Driving Automation)

A six-level classification system (0-5) defined by SAE International that describes the degree of vehicle automation. Level 0 provides no automation; Levels 1-2 offer driver assistance features; Level 3 provides conditional automation where the vehicle can drive but a human must…

SAPI(also: Speech Application Programming Interface, Microsoft SAPI)

The Speech Application Programming Interface (SAPI) is a Microsoft Windows API that enables applications to use speech recognition and text-to-speech synthesis. SAPI provides a standardized interface between speech engines and applications, meaning that a synthetic voice built…

SCORM(also: Sharable Content Object Reference Model)

A set of technical standards for e-learning software products, originally developed by the Advanced Distributed Learning (ADL) initiative. SCORM defines how learning content is packaged, sequenced, and communicated with Learning Management Systems (LMS), enabling…

SGML(also: Standard Generalized Markup Language)

An international standard (ISO 8879:1986) metalanguage for defining markup languages that describe the structure and content of electronic documents. SGML introduced foundational concepts including descriptive markup (tagging what content is, not how it should look), document…

Section 508(also: 508 Compliance, Rehabilitation Act Section 508)

A provision of the United States Rehabilitation Act that requires federal agencies to make their electronic and information technology accessible to people with disabilities. Updated in 2017 (the "Section 508 Refresh"), the standards now incorporate WCAG 2.0 Level AA as the…

Semantic Tagging(also: Structural Tagging, PDF Semantic Markup)

The process of marking up content within a PDF document with tags that convey the semantic meaning and structural role of each element — such as headings, paragraphs, lists, tables, figures, and links — rather than just visual formatting. Proper semantic tagging ensures that…

Sensory Characteristics(also: WCAG 1.3.3, Success Criterion 1.3.3)

WCAG 2.1 Success Criterion 1.3.3 (Level A), which requires that instructions for understanding and operating content not rely solely on sensory characteristics such as shape, colour, size, visual location, orientation, or sound. Examples that violate 1.3.3 include referring to…

Stanca Act(also: Legge Stanca, Italian Accessibility Law, Law 4/2004)

The Stanca Act (Legge Stanca, Law No. 4 of January 9, 2004) is Italy's primary legislation mandating digital accessibility for public sector websites and services. Named after Lucio Stanca, the Minister for Innovation and Technologies who championed it, the law requires that…

Success Criteria(also: Success Criterion, SC)

The testable statements within the Web Content Accessibility Guidelines (WCAG) that define specific requirements for making web content accessible. Each success criterion is assigned a conformance level (A, AA, or AAA) indicating its priority. Success criteria are…

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