When a user adds a font group, it is stored in the following location:
HomeDirectory/.dt/sdtfonts/host/locale/typeface-nnnnnn
host is the local workstation's host name.
locale is the user's current locale such as “C” or “ja.”
typeface-nnnnnn is a name derived from the selected font and a unique generated number.
This font group directory contains the following three files
fonts.alias
fonts.dir
sdtfonts.group
The fonts.alias and fonts.dir files are the normal X11 font files suitable for adding to the Xserver's font path. The sdtfonts.group file contains the user specified font group name.