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

11-34 Soft Font Creation EN
Y Resolution (UI)
The Y Resolution field is the pixel resolution in the Y scan direction at
which the font was designed.
Note This field is not present in the Format 15 Font Header and is not
necessary for TrueType fonts.
Scale Factor (UI)
The Scale Factor field indicates the number of design units per Em,
and is the unit used for all scalable metrics in the font header. It is
used for TrueType and Intellifont scalable soft fonts.
Master Underline Position (SI)
The Master Underline Position is the top of the PCL floating underline
with respect to the baseline in design units.
Note For scalable fonts, the Master Underline Position field replaces the
1-byte Underline Position field.
Master Underline Thickness (Height) (UI)
The Master Underline Thickness field defines thickness of the floating
underline in design units.
Font Scaling Technology (UB)
For scalable fonts, this field species the technology to be used for font
scaling.
Table 11-24
Value Font Scaling Technology
0 Intellifont
1 TrueType