An Adobe Illustrator vector format file. Files with the extension .ai are often used for artwork and illustrations as users can resize them without distortion. It is composed of several layers with objects and text on each layer. Users can import Illustrator files into many other programs like InDesign, Acrobat, Photoshop etc. If you design or print your t-shirts, you can create your designs in Illustrator and apply them to your t-shirt using a heat press.
A unit for defining the size of a font. It's not a distance; this unit's measurement is only relative to the typeface's design.
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.
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).
The process of applying a thin layer of foil to paper coated with adhesive on one side.
The act of gathering qualitative data about a person's thoughts and feelings related to a product.
The placement or otherwise of a thing in relation to other things. In design, proximity may be considered as the distance between two items in space or their relative location to each other.
An abbreviation for Portable Document Format. The PDF format was originally developed to share documents between different operating systems in the late 1980s. Any text document, image or page layout can be saved as a PDF file that includes all of the font information needed to display it without losing quality.
The surface quality of an element.
In handwriting and calligraphy, ball terminals are the end of a stroke that resembles a ball. They are also used in some typefaces like cursive or old-style typefaces.
A low-fidelity representation of a user interface design.