HP PCL/PJL reference (PCL 5 Printer Language) - Technical Reference Manual Part II

EN Glossary-5
Factory Default Environment
A factory default is a setting programmed into the printer at the
factory. The group of all the printer’s factory settings is referred to
as the factory default environment. The factory default symbol set
is selectable from the control panel configuration menu (refer to
the printer User’s Manual).
Font
A font is a set of characters that have similar characteristics. A
font has an assigned name, typeface, and is further described by
its spacing, height, pitch, style, stroke weight, symbol set, and
orientation. For example, the name of the font used for this text is
Helvetica; its height is 10 point, its style is upright, and its stroke
weight is medium.
Font Cartridge
A removable media containing multiple fonts. When a cartridge is
plugged into the printer, the printer has access to the fonts contained
in the cartridge.
Font Header
The font header and character definitions contain all the information
needed to format a font for use in the HP LaserJet printers.
Every PCL font header begins with a font descriptor, which identifies
the basic characteristics common to all characters of a font, such as:
font type, baseline position, character cell width and height, character
orientation, symbol set, etc. Chapter 11 describes the font header
and character definition formats for PCL bitmap fonts, as well as
Intellifont and TrueType scalable fonts.
Height
The height of a font is the measurement of the body of the type in
points. A PCL point is 1/72nd inch. The body of the type is slightly
greater than the distance from the bottom of a descender (such as
the tail of lower-case “p”) to the top of an unaccented capital letter.