Glossary

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Multisensory Interface(also: Multimodal Interface, Multi-Sensory Feedback)

An interface that communicates information through multiple sensory channels simultaneously, such as visual, auditory, and tactile (haptic) feedback. Multisensory interfaces are particularly valuable in accessibility because they reduce dependence on any single sense, allowing…

Narrow-Deep Interface(also: Narrow-Deep UI, Wizard Interface, Step-by-Step Interface)

A user interface design pattern that presents information across many screens, with only a small amount of content per screen. Users navigate through multiple sequential screens rather than scrolling through dense content. This approach reduces cognitive load by focusing…

One-Handed Input(also: Single-Handed Operation, One-Handed Operation)

One-handed input refers to interaction techniques and interface designs that can be operated using a single hand, accommodating users who have limited use of one limb due to amputation, hemiplegia, stroke, cerebral palsy, or other physical conditions. One-handed input methods…

Panning(also: Screen Panning, Viewport Panning)

The act of moving the visible area of a screen magnifier or viewport across a webpage or application to view content that extends beyond the currently displayed portion. For screen-magnifier users, panning is a fundamental but often arduous interaction technique, requiring…

Perceptual Guidance

An instructional technique that directs a user’s attention to specific perceptual features of a target — most commonly color and on-screen location — to help them detect or disambiguate it. In accessibility contexts, perceptual guidance is used in screen-reader cues, tutorial…

Pie Menu(also: Radial Menu, Circular Menu)

A pie menu is a circular or ring-shaped menu interface in which command options are arranged radially around a central point, allowing selection by moving the cursor or making a directional gesture toward the desired item. Unlike linear drop-down menus, pie menus leverage…

Playhead(also: Play Head, Cursor Position)

The visual indicator on a video or audio timeline that shows the current playback position, typically a vertical line or triangle marker that moves in time with the media. Playheads are a core primitive of timeline-based media tools (video editors, DAWs, subtitle authoring…

Preset(also: Default Configuration, Template Setting)

A predefined combination of settings or options that can be applied as a group, reducing the number of individual decisions a user needs to make. In accessibility interfaces, presets help users with cognitive disabilities by offering curated starting points rather than requiring…

Progress Bar(also: Progress Indicator)

A UI element that visually communicates the proportion of a task, process, or timeline that has been completed. In media players it indicates playback position; in forms and wizards it signals completion across steps; in file transfers it shows elapsed progress. Accessibility…

Progress Tracking(also: Progress Indication, Progress Visualization)

The use of visual or auditory indicators to show how far a user has advanced through a task, document, or process. In cognitive accessibility, progress tracking serves multiple functions: it provides a sense of accomplishment that motivates continued engagement, reduces anxiety…

Scrubbing(also: Video Scrubbing, Timeline Scrubbing)

The interaction of dragging a playhead across a video or audio timeline to preview content at arbitrary positions, typically with real-time visual or audio feedback. Scrubbing is ubiquitous in video editors, NLEs, DAWs, and subtitle-authoring tools. From an accessibility…

Signifier(also: Perceived Affordance)

A perceptible cue — visual, auditory, or tactile — that indicates how an element can or should be used, making an underlying affordance discoverable. In Don Norman’s refinement of affordance theory, the affordance is the action possibility, and the signifier is the signal that…

Simplified Interface(also: Reduced Complexity Interface, Easy Mode)

A user interface design that intentionally reduces the number of features, options, and interaction steps to make a product or service accessible to users who would be overwhelmed by a standard interface. Simplified interfaces typically remove non-essential functionality,…

Slider(also: Content Slider, Swipe Slider)

A UI pattern where content items are arranged horizontally and navigated by swiping or tapping arrow controls, exposing one or a few items at a time. Unlike carousels, sliders typically do not auto-advance. Accessibility concerns overlap with carousels: keyboard access,…

Stepper(also: Step Indicator, Wizard Stepper)

A UI pattern that breaks a multi-step process — such as checkout, registration, or booking — into numbered or labeled stages with a visual progress indicator. Steppers reduce cognitive load by showing users where they are, what they have completed, and what remains, and are…

Tooltip(also: Form Field Tooltip, Accessible Name (PDF))

In PDF forms, a tooltip is the programmatic label associated with a form field that assistive technologies read aloud when the user reaches that field. Unlike HTML, PDF does not have a native label-to-field association, so the tooltip carries the accessible name. Best practice…

Touch Target(also: Tap Target, Hit Area, Target Size)

A touch target is the area on a touchscreen interface that responds to a user's tap or touch input. Accessibility guidelines recommend minimum touch target sizes to ensure that people with motor impairments, limited dexterity, or larger fingers can reliably activate interactive…

User Preference Profile(also: Customization Profile, Personalization Profile)

A stored set of user preferences and settings that can be automatically applied to new content, reducing the need for repeated manual customization. In video accessibility for ADHD, user preference profiles could store preferred layout, background, caption, and audio settings…

Verbosity Settings(also: Screen Reader Verbosity, Announcement Settings)

Configuration options that control the amount of detail a screen reader or accessible application announces to the user. Verbosity settings allow users to adjust the balance between receiving comprehensive information and reducing auditory noise. In development environments,…

Voice User Interface(also: VUI)

A user interface that enables interaction with a device or system through spoken voice commands and audio responses. Voice user interfaces use speech recognition to interpret user input and text-to-speech or pre-recorded audio for output. For accessibility, VUIs provide an…

Web Widget(also: Widget, UI Widget, Web Component)

A discrete, interactive user interface element within a web page that allows users to perform specific actions or view dynamic content. Widgets range from simple controls like checkboxes and dropdown menus to complex components like date pickers, chat windows, autocomplete…