In HTML, CSS, and related technologies, the font family attribute refers to the digital equivalent of a typeface. (for example, Gill Sans bold 12 point or Century Expanded 14 point), and a typeface refers to the collection of related fonts across styles and sizes (for example, all the varieties of Gill Sans). In the terminology of movable metal type, a font is a set of pieces of movable type in a specific typeface, size, width, weight, slope, etc. A computer font specifically designed for the computer screen, and not for printing, is a screen font. A computer font is designed and created using a font editor. Comparison between printed (top) and digital (bottom) versions of PerpetuaĪ computer font is implemented as a digital data file containing a set of graphically related glyphs.