The type longHorMetric is defined as an array where each element has
two parts: the advance width, which is of type USHORT, and the left side
bearing, which is of type SHORT.
Type Name Description
Fixed Version 0x00010000 for version 1.0
0x00020000 for version 2.0
0x00025000 for version 2.5 (deprecated)
0x00030000 for version 3.0
Fixed italicAngle Italic angle in counter-clockwise degrees from the vertical.