Glossary

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Visual Fidelity(also: Graphical Fidelity, VF)

The degree to which a virtual environment replicates the visual detail, realism, and complexity of real-world settings. In accessibility contexts, visual fidelity affects cognitive load and task performance differently across user populations. Research shows that individuals…

Visual Information Seeking Mantra(also: Overview First, Shneiderman's Mantra)

A design principle for information visualisation coined by Ben Shneiderman, summarised as "overview first, zoom and filter, then details-on-demand." The mantra describes an optimal pattern for presenting complex information: start with a broad overview so users can orient…

Visual Layout Customization(also: Layout Customization, Video Layout Arrangement)

The ability for users to rearrange, resize, reposition, lock, or remove visual elements in a digital interface to suit their individual needs. In videoconferencing, visual layout customization is critical for d/Deaf and hard of hearing users, who may need to enlarge the…

WYSIWYG(also: What You See Is What You Get)

An acronym for "What You See Is What You Get," describing a user interface paradigm where content displayed on screen during editing closely resembles the final output (such as a printed document). While WYSIWYG editors are standard in word processing, they can present…

Wizard Design Pattern(also: Wizard Interface, Step-by-step Interface, Guided Task Flow)

An interface design pattern that breaks complex tasks into a series of simple, sequential questions or steps. Rather than presenting all options simultaneously, a wizard guides users through one decision at a time, reducing cognitive load and the need for prior system knowledge.…

Z-Order(also: Stacking Order, Layer Order)

Z-order refers to the front-to-back layering sequence of overlapping objects on a 2-D digital canvas, determining which objects appear in front of or behind others. In accessibility, Z-order is significant because screen readers in presentation software often read objects…

Zoom Interface(also: Zoom Screen, Zoomable User Interface, ZUI)

A user interface technique that allows users to magnify a portion of the screen to increase the effective size of interface elements, making them easier to select with low-precision pointing devices such as eye trackers or head mice. Unlike simple screen magnification for low…