Baseline

An imaginary line on which most letters "sit". As such, it equals the height of an em square. The expected result of a baseline is to reference the height with which text is aligned. The alignment ranges from ascenders, which are the upper strokes in b, d, and h, down to descenders like j or y.

More terms you might want to know

Readability

A measure of the ease of understanding text.

Tracking

The adjustment of all characters in a line by moving them closer together or farther apart.

Link

A prominent design feature of web applications. Links can be used to navigate websites, provide shortcuts to content, or change views within a web application. These links allow for ease of access and save time when users need to find information or use services from other domain names.

Placeholder Text

Text that is used to fill in a gap in a document.

Fitts' Law

A prediction model used in human-computer interaction. It states that the time required to move to a target area rapidly increases as the distance to the target increases. The law was proposed by Paul Fitts, an American psychologist, in 1954 as a mathematical model of movement with limited cognitive capacity.

Fitts hypothesized that one would quickly select its first apparent target when reaching for an object before considering alternatives — a phenomenon called "target fixation." This tendency would increase progressively with increased distance between the subject and object until it eventually became exponential (i.e., too far away).

Monochrome

Designs that are created in one colour. It can be any colour, but the whole design will range from light to darker shades. As the name implies, it is typically a single hue, with black and white also being typical combinations for this type of design.

Letterpress

A printing press that uses movable type and punches to make impressions on paper.

Affinity Diagram

A data visualisation tool that can be used to explore and group people's thoughts or reactions to a set of concepts. Affinity diagrams are often used in user research and design thinking as an experimental technique for generating new ideas or solutions.

The emergent patterns in these visual representations can help identify which aspects your audience will respond well to, thus enabling decisions on the information architecture and next steps in the process.

It is important to note that affinity diagrams were initially developed for qualitative research but have since been adapted for quantitative research (though they are not typically used with statistical data).

Gestalt Theory

A theory in psychology that discusses the general idea that the whole is greater than the sum of its parts. It's based on a human need to search for stability and meaning, which leads to organic movements towards wholeness. Gestalt Theory assumes there are inherent flaws in how we perceive forms and patterns, and it holds that this innate tendency transforms into an active process of looking for order in reality.

Rule of Thirds

A rule of thumb used in photography to create more visually appealing images which states that an image should be composed so that the subject or focus of the image occupies one-third of the picture space, with two equal vertical lines dividing their composition into two.

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