The DefIcons patch will magically transform Workbench's silly fake icons
 (displayed when you pick the menu item Window/Show/All Files) into more
 meaningful ones.  The program not only recognizes files such as projects
 and tools, but identifies various other file types:

       · IFF, JPEG, ANIM and GIF files
       · 8SVX, SMUS, DCMS, Med, and PT/ST mods
       · Handlers, Kickfiles, and Filesystems
       · ASCII, TeX, AmigaGuide and Postscript files
       · Source codes of various languages
       · Keymaps, Datatypes, Libraries, and Printer Drivers
       · Various crunched filetypes
       · Bitmap and Outline Fonts

         ...and several more.


 Just like any "fake" icon, you can't double click on fake icons to
 start the associated tool immediately, but if you have designated a
 default tool for the deficon (located in ENVARC:sys), the "Execute
 Command" text field will automatically have the default tool entered
 for you.  This feature is very handy for things like text files and
 picture files that don't have icons attached to them.

 DefIcons has a brainfile called deficons.prefs, which is copied to ENVARC:
 by the install_NewIcons script. Unfortunately, it is currently not possible
 to edit the brainfile, so you can't add your filetypes (if DefIcons
 doesn't recognize some of your files, tell me).  When you install
 NewIcons, the Installer script copies the default def_xxx icon images to
 ENVARC:.  These icons are used by DefIcons.

 Apart from fake icons, DefIcons has another wonderful feature: if a
 volume doesn't have a disk.info icon, it will replace the standard
 def_disk.info icon used by Workbench with a user-defined one. For
 example, it will use def_CD0disk.info for a CD in CD0:, and
 def_RAMdisk.info for the Ram Disk.  If you did the old 'copy ramdisk.info
 to ram:disk.info' trick, you can remove that command from your
 startup-sequence.

 DefIcons works well with multiple files systems and MFS.  When a disk
 without disk.info is inserted in DF0:, it first searches for an icon
 named def_DF0disk.info; if it can't find it, it looks for an icon
 named after the file system (def_DOS0disk.info, def_MSD0disk.info,
 def_PFS0disk.info...) so you can have different icons for different
 file sytems.  Latest versions of CrossDos use an icon of their own
 for MS-DOS disks.  Since the icon is really ugly, you may want to use
 your def_MSD0disk.info.  To do that, load L:crossdosfilesystem into
 a hex editor, search for the string "disk.info" and replace it with
 something else, for example "dusk.info".

 The disk trick will also work for non-DOS disks.  In this case, the
 basename is the one displayed by Workbench under the icon.  For
 example if Workbench shows "DF0:NDOS", the icon named def_NDOSdisk.info
 will be used.  DF0:???? is a special case: def_BADdisk.info will be
 used.

 DefIcons uses a tree structure when identifying files.  For a JPEG
 picture, for example, DefIcons will search in order first for
 def_jpeg.info, def_picture.info and def_project.info.  IFF files are
 special, and DefIcons will search for def_XXXX.info, where XXXX is the
 FORM type of the file.  If it can't be found, def_iff.info is used.

 For archived files there are three families: def_archive (lha, zip,...),
 def_filearchive (for uuencode, compress, gzip,...) and def_diskarchive
 (DMS).  These families can have sons (i.e, def_lha,  def_dms, etc)
 if you create and add them to your ENVARC:sys directory.