The principle of both sides of an object having a sense of symmetry. It ensures that the weight and visual mass are distributed evenly on both sides of a surface. Balance is more important than symmetry because people don't often notice when something is asymmetrical, but they will always see if something is unbalanced.
The measure of a device or computer system's ability to capture fine detail. A higher number of pixels can provide more details and finer images on the screen.
The space that an item has around it.
The primary graphic that appears at the top of a webpage, designed to grab people's attention.
An observation in Psychology that suggests that the number of mental objects the average person can keep track of is seven (plus or minus two).
The designation of a set of character encoding styles for glyphs that are not capital letters.
When you need to break a line of text and start on a new line in a text box.
The small decorative stroke at the end of a stroke in a letter, or a typeface.
A print that the printer receives to monitor the progress of production. Proofing is a matter of looking at the print to ensure that it has been printed correctly and that the colours are rendered accurately.
A process in which subjects use a product or service under test conditions and report their experience.
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.