The information provided here is limited to what the typical Chinese Mac user might want to know. They are fully scalable: to print or display a character, the outline is scaled to the desired size, then rendered by filling the outline with bits or pixels. Outline fonts are fonts in which glyphs are described mathematically as 'outlines,' a series of line segments, arcs, and curves. The characters defined by the encodings inside your computer are abstract, whereas the glyphs defined by a font are concrete visual forms that can be rendered on screen or paper.