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FACE(6)                          Games Manual                          FACE(6)

       face - face files

       The  directory  /lib/face contains a hierarchy of images of people.  In
       that directory are subdirectories named by the sizes of the correspond-
       ing  image files: 48x48x1 (48 by 48 pixels, one bit per pixel); 48x48x2
       (48 by 48 pixels, two bits per pixel); 512x512x8 (512  by  512  pixels,
       eight  bits per pixel); 512x512x24 (512 by 512 pixels, twenty-four bits
       per pixel (3 times 8 bits per color)).  The large files serve  no  spe-
       cial  purpose;  they are stored either as bitmaps (see bitmap(6)) or as
       picture files (see picfile(9.6).  The small files are the `icons'  dis-
       played by seemail (see mail(1)); their format is special.

       Icons are stored as text, one line of the file to one scan line of dis-
       play.  Each line is divided into 8-bit, 16-bit,  or  32-bit  big-endian
       words,  stored  as  a  list of comma-separated hexadecimal C constants,
       such as:

              0x9200, 0x1bb0, 0x003e,

       This odd format is historical and the programs that read it  are  some-
       what forgiving about blanks and the need for commas.

       The  files  /lib/face/*/.dict  hold  a  correspondence between users at
       machines and face files.  The format is

              machine/user directory/file.ver

       The machine is the domain name of the machine sending the message,  and
       user  the  name  of  the user sending it, as recorded in /sys/log/mail.
       The directory is a further  subdirectory  of  (say)  /lib/face/48x48x1,
       named  by  a  single letter corresponding to the first character of the
       user names.  The file is the name of the file, typically but not always
       the user name, and ver is a number to distinguish different images, for
       example to distinguish the image for Bill Gates from the image for Bill
       Joy, both of which might otherwise be called b/bill.  For example, Bill
       Gates might be represented by the line

              microsoft.com/bill b/bill.1

       If multiple entries exist for  a  user  in  the  various  .dict  files,
       seemail  chooses  the  highest pixel size less than or equal to that of
       the display on which it is running.

       Finally, or rather firstly, the file /lib/face/.machinelist contains  a
       list  of  machine/domain  pairs,  one  per line, to map any of a set of
       machines to a single domain name to be looked up in  the  .dict  files.
       The machine name may be a regular expression, so for example the entry

              .*research.att.com    astro

       maps  any  of  the  machines  in  AT&T Research into the shorthand name
       astro, which then appears as a domain name in the .dict files.

       mail(1), tweak(1), bitmap(6)