A font is a set of symbols, which can be used for typesetting. In metal typesetting, each piece is called a “sort” and a each point size of a typeface makes up its own font. This is not the case for digital fonts, since they are scalable. The different fonts of a type family are usually referred to as “styles” (e.g. regular, italic, bold italic). Digital fonts are made up of characters and glyphs.