Do some more file format spelunking

`WarHammer.ani` turns out to be a regular `obj` file; `WarHammer.idx`
is partially decoded, but I'm struggling to link it to the former in
a reasonable way at the moment.

doc/formats/index.md

@@ -6,22 +6,18 @@ remake.
 
 ## Filesystem layout
 
-* `Anim/`
-    * `WarHammer.ani` # Doesn't seem to be a RIFF file. 398M so very important.
-      * There's a pcx image header at `dd ... bs=1 skip=213` but it seems to be a false alert
-      * Hits for "AmigaOS bitmap font"... probably a false positive
-      * Lots of 8-byte reads when loading stuff in the mission editor
-      * Some ~4K reads, havent found one corresponding to a known format yet
+* [✓] [`Anim/`](obj.md#WarHammer.ani)
+    * [`WarHammer.ani`](obj.md#WarHammer.ani)
 * [`Assign/`](obj.md#assign)
     * `*.asn` # Unknown, seems to be related to .obj files 
 * `Cursor/`
-    * `*.ani` # RIFF data
-    * `*.cur` # Presumably standard windows-format non-animated cursors
+    * `*.ani` # RIFF data, standard ANI format \o/
+    * [`Cursors.cur`](obj.md) # `obj` file containing pointers and drag elements
 * `Data/`
     * `*.dat` # plaintext files defining properties of objects. No single format
         * **PARSED**
             * `Accounting.dat`  # key = value => internal/data/accounting.go
-            * `AniObjDef.dat`   # animated object definitions
+            * [`AniObjDef.dat`](ani.mnu) # animated object definitions
             * `GenericData.dat` # Generic Game Settings
         * **TODO**
             * `ChaNames.dat`    # list of character names
@@ -63,24 +59,24 @@ remake.
     * `wh40k.flt` # Audio filter(s?)
 * [✓] [`Fonts/`](fonts.md)
     * `cboxfont` # ???
-    * `*.fnt`
-    * `*.spr`
-* `Idx/`
-    * `WarHammer.idx` # unknown, 1.8M
+    * [`*.fnt`](fonts.md)
+    * [`*.spr`](obj.md) # `obj` file
+* [ ] [`Idx/`](ani.md)
+    * [`WarHammer.idx`](ani.md) # unknown, 1.8M
 * [`Maps/`](maps.md)
-    * `*.MAP`
-    * `*.TXT`
+    * [`*.MAP`](maps.md)
+    * [`*.TXT`](maps.md)
 * [`Menu/`](mnu.md) - UI element definitions
-    * `*.mni`
-    * `*.mnu`
+    * [`*.mni`](mnu.md) # Menu include file
+    * [`*.mnu`](mnu.md)
     * [`*.obj`](obj.md)
 * `Misc/`
     * `occlusio.lis` # plain text, presumably occlusion mappings?
 * [`MultiMaps/`](maps.md#multimaps)
-    * `*.MAP`
-    * `*.TXT`
+    * [`*.MAP`](maps.md)
+    * [`*.TXT`](maps.md)
 * [✓] [`Obj/`](obj.md)
-    * `*.obj`
+    * [`*.obj`](obj.md)
 * [✓] `Pic/`
     * `*.pcx` # Standard .pcx format
 * `RandomMaps/`
@@ -91,12 +87,12 @@ remake.
     * `*.txt` # Seems to be a copy of one of Maps/*.txt
 * [✓] [`Sets/`](sets.md)
     * `Data.chk`
-    * `*.set`
+    * [`*.set`](sets.md)
 * [✓] `SMK/`
     * `*.smk` # Videos: RAD Game Tools Smacker Multimedia version 2
-* [ ] `Sounds/`
+* [ ] [`Sounds/`](sound.md)
     * [`wh40k.ds`](sound.md)
-* [ ] `Wav/`
+* [ ] [`Wav/`](sound.md)
     * [`*.wav`](sound.md)
 
 Phew.