Type series: The range of type sizes on one typeface design. For metal, it ranges from 6 pt, up to 72pt. For computer typesetting system, the size may range from 4, pt, to more than 576 pt, depending on the program.

• 字系:同一字体设计的一系列字大小。 在金属活字方面，字大小的范围从6点至72点。在电脑排字系统内，视乎所用排字软件，范围从4点至576点或以上。