FONT SUPPORT AND SELECTIONGlobal Font Identifiers (GFIDs)To provide automatic font selection within your Xerox MRPFamily coax printer, Xerox fonts correlate to IBM font parameters.This correlation considers the IBM method of selecting fontsusing Global Font Identifiers (GFIDs) as follows:• Data Processing (DP) mode• Word Processing (WP) mode.The DP mode selects font through the printer file font parameter.The WP mode selects font through type style.GFIDs are numbers that reference fonts in the IBM data stream.A Xerox font may be identified by an associated GFID.A GFID defines the typestyle, font type, and the pitch but notthe orientation. For example, GFID 0011 refers to a Courier 10pitch font in both portrait and landscape orientations. The fontorientation on the printed page is taken from the orientationselected through the emulation commands sent from the hostcomputer system unless automatic orientation is enabled.GFID cross reference is automatically modified each time a font isdownloaded.All the font names correspond to GFID and both orientations,landscape and portrait, are included in the font. If you do notload all the fonts, refer to the “IBM GFID to PCL fonts attribute”appendix.GFID to PCL font mappingThe default GFID to PCL font mapping is not active when theXerox 3812/3816 compatibility fonts are used. The character andline spacing of the compatibility fonts are designed to match theequivalent IBM GFID font. The fixed GFID interval ranges from 1to 399 and is divided into groups with different pitch. Refer toTable 4-2. GFIDs from 400 and up are typographical fonts. If theprinter resident PCL fonts are used in lieu of the Xerox 3812/3816compatibility fonts, character and line spacing is controlled bythe interface, not the font.Proportional spaced (PS) fonts are fixed spaced fonts. Thespacing is controlled by the interface, and not the font.Print density to GFID mappingA pitch to GFID mapping occurs if the SCS Set Print Density(SPD) command specifies the pitch parameter. Since the 3812emulates a 5219 printer, the pitch to GFID mapping isimplemented according to the mapping shown in Table 4-3.XEROX MRP FAMILY COAX COMMAND REFERENCE 4-3
