Properties - Characteristics
These fields are used to describe the visual characteristics of a given typeface. These characteristics are then used to associate the font with other fonts of similar appearance having different names. The PANOSE evaluation document details the specifications for assigning PANOSE numbers.
Font Family Classification
These fields are a classification of the font-family design.
The font class and font subclass are registered values assigned by IBM to each font family. These fields are intended for use in selecting an alternate font when the requested font is not available. The font class is the most general and the font subclass is the most specific. More information about this field is available online: