INTRODUCTION
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XFile makes use of four symbolic icon sizes: tiny, small, medium and large,
distinguishable by the file name suffix (t, s, m, l). Icon images may be of
arbitrary pixel size, but by convention are 16x16, 24x24, 32x32 and 48x48.

XFile will choose an icon size that closely matches the font height used to
display labels in the file list.

If an icon file specified in the type database is missing, a generic, built-in
icon will be used instead.

ICONS USED IN THE DEFAULT CONFIGURATION
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audio    Audio files (wav, mp3, flac, etc.)
asm      Assembly code
bin      Generic binary files
cinc     C Header
comp     Compressed Files (.Z, .bz, .gz, etc.)
csrc     C Source
cxxinc   C++ Header
cxxsrc   C++ Source
dir      Directory (readable and executable)
dlink    Dangling symlink
elf      ELF Binary
exec     Executable file
file     Generic file (used if specified icon is missing)
http     Hypertext (anything web related)
info     Manpage, README etc.
isocd    ISO CD image
lib      Static library
makefile Makefile
mpti     Inactive mount point (variation of dir)
mpt      Active mount point (variation of dir)
nxdir    Non executable directory (variation of dir)
pdf      PDF files
pixmap   Raster image (png, jpeg, etc.)
script   Script (any other than shell)
sh       Shell script
tar      Tarball (also compressed e.g: .tar.xz)
text     Plain text
typeset  Formatted text (document, troff, etc.)
video    Video files
xbm      X Bitmap
xpm      X Pixmap
