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

8-12 PCL Font Selection EN
Height Command
The Height command specifies the height of the font in points. This
characteristic is ignored when selecting a fixed-spaced scalable font;
however, the value is saved and available when a bitmap font or a
proportionally-spaced scalable font is selected.
E
C
( s # V - Primary Height
E
C
) s # V - Secondary Height
# = Height in points
Default = 12
Range = 0.25 - 999.75
The value field (#) is valid to two decimal places. If the requested
height is unavailable, the closest height is selected. All bitmap fonts
whose heights are within a quarter point of the specified height are
considered to have the specified height. For scalable fonts the value
field is from .25 to 999.75 points in increments of 0.25 point (values
are rounded to the nearest quarter point).
The factory default primary and secondary heights are 12 point. In
PCL bitmap fonts, a point is 1/172 (0.01389) inch. For scalable fonts,
the definition of a point varies in TrueType a point is 1/172 inch, while
Intellifont fonts have 72.307 points to the inch.
The user default primary and secondary heights are implicitly set by
selection of a user default font from the printer’s control panel (refer to
the printer User’s Manual).