Add some more details of the .mnu [SUB]MENUTYPE field

doc/formats/mnu.md

@@ -104,8 +104,8 @@ Each menu has a list of parameters:
 | `MENUID`|  `1`, `2`, `3` | Maybe linking between menus? |
 | `MENUTYPE` | `0`, `1`, `2`, `3`, `45`, `300` | ? |
 | `MOVEABLE` | `0` | Unimplemented functionality? |
-| `ACTIVE` | `0`, `1` | Boolean - whether to show the thing |
-| `SPRITEID` | `-1`, `0`, `123` | Select from `.obj` file |
+| `ACTIVE` | `0`, `1`, `1,0` | ? |
+| `SPRITEID` | `-1`, `0`, `123`, `16,-1,1` | Select from `.obj` file? |
 | `ACCELERATOR` | | ? |
 | `DRAW TYPE` | | ? |
 | `SHARE` | | ? |
@@ -133,3 +133,53 @@ $GenLoad.mni
 
 It looks like we just interpolate the named file into the text when we come
 across one of these lines.
+
+## (Sub)menu types
+
+The types seem to refer to different types of UI widget. Here's a list of unique
+values:
+
+
+| Value | Meaning |
+|-------|---------|
+| 0 | Background |
+| 1 | Logical menu grouping? |
+| 2 | ? |
+| 3 | Standard button? |
+| 30 | Equipment? |
+| 31 | "Character helmet" / "Slot" |
+| 40 | "X Line Y" |
+| 41 | "X Line Y" |
+| 45 | ? |
+| 45,10,11,9 | ? |
+| 45,11,12,10 | ? |
+| 45,14,15,13 | ? |
+| 45,17,18,16 | ? |
+| 45,3,4,2 | ? |
+| 45,5,6,4 | ? |
+| 45,6,7,5 | ? |
+| 45,7,8,6 | ? |
+| 45,8,9,7 | ? |
+| 45,9,10,8 | ? |
+| 50 | ? |
+| 60 | Other text to display? (`UltEquip.mnu`) |
+| 61 | Text to display |
+| 70 | Hypertext to display |
+| 91 | ? |
+| 100 | ? |
+| 110 | ? |
+| 120 | ? |
+| 200 | Drop-down button? |
+| 205 | Single list box item? |
+| 220 | Psyker power? |
+| 221 | Page? |
+| 228 | Big buttons in `Main.mnu` |
+| 232 | ? |
+| 233 | ? |
+| 300 | Pop-up dialog box |
+| 400,0,0,{8, 16} | ? |
+| 400,22,22,{2, 4, 5, 6, 7, 8, 9, 9, 10, 13, 16} | ? |
+| 400,30,-1,5 | ? |
+| 405,0,0,{8, 16} | ? |
+| 405,22,22,{2, 4, 5, 6, 7, 8, 9, 10, 13, 16} | ? |
+| 405,30,-1,5 | ? |