All available space (line-height) between two consecutive lines of text; this measurement should be adjusted for either ascenders or descenders. In hand typesetting, leading referred to thin strips of lead inserted by hand between lines of type in the composing stick to increase vertical distance.
A non-functional first draft of a design.
The setting on a camera's lens which controls how much light comes into the camera. Aperture settings can usually be set to F-stop values ranging from F1.4-F22. The higher the aperture value, the smaller the opening is, and vice versa, which affects the depth of field in photos and how much light reaches and illuminates a subject or scene in a photo.
The process of a new user being brought in to a new product. The design for this process aims to have an effective, efficient, and engaging user experience.
The word "bracket" is often used to refer to parentheses and is written as either [] or () and used to delimit blocks of text, e.g. a set of instructions. Within brackets, items are arranged from left to right in order of precedence.
A colour that appears to be pure and lacks any lightness (or tone) or saturation.
Designers and developers use font styles to denote differences in meaning between two or more words, phrases, sentences, paragraphs, or blocks of text. Typical font styles in CSS and web development are normal, italic, oblique and inherit.
The arrangement of different elements in relation to each other so that they appear to be mirrored. Symmetrical designs can be found throughout art and architecture, as well as in nature.
The distance from the baseline to the top of a capital letter, number, or other upper-case glyphs.
A statistical method in which two variants of the same activity are compared against each other (typically with several variants), one at a time, and the most effective variant is selected.
A pixel, or a picture element, is the smallest addressable element in a display device.