The name of a font family appears in three different connections in SAPscript: 1. The set of font families is maintained in the SAPscript font maintenance. Each font family is also assigned the attribute "proportional" or "nonproportional". 2. A system font (or SAP font) is a combination of font family, font size, the attribute for bold and italic. The font selections used in text layout with SAPscript are always system fonts. 3. A printer font is the combination of printer type, font family, font size, the attribute for bold and italic. Printer fonts are the character fonts of the output devices which are available for SAPscript. Printer fonts require the maintenance of certain metrics data (information about the width of the characters) and control data to set the fonts on the output devices.