Truetype Scalable Fonts - HP PCL 5 Reference Manual

The master font design size is 250 points (a CG point=.01383
inches). There are 8782 units per Em at the Master Font Size.
Figure 11-2 Agfa Design Window

TrueType Scalable Fonts

TrueType scalable font character coordinates are typically based
on a system of 2048 units per Em. The baseline is defined by
y-coordinate=0. The left reference is usually defined by
x-coordinate=0 (although there is some variation among fonts).
To determine the left reference line for an individual TrueType
character, subtract the LSB value found in the hmtx table from
the xMin value found in the glyf table. See True Type Font Files
for more information.
Coordinate System 11-5
EN