launcher: notice when an interrupted apply was finished or rolled back (retries while another window applies), windows take over config changes made in another window, hints and settings wrap at the minimum window size, data paths with .. cleaned up, boot-to-level starts bound to their level (ignored for other levels)

docs/manual/18-mods.md

@@ -23,6 +23,10 @@ first.
 * Mods marked **modifies groove.exe** add code to the game program of LlamaMod's copy. This is
   safe, but on Windows some antivirus programs flag the changed file – see
   [Troubleshooting](20-troubleshooting.md).
+* If LlamaMod was closed in the middle of an Apply, it repairs its game copy at the next start
+  and tells you whether it finished that Apply or went back to the previous mod selection.
+* Two LlamaMod windows (or the level editor) share one mod selection: a window shows the other's
+  changes as soon as you click into it.
 
 ![Several mods combined in the village](img/mod_all.jpg)
 
@@ -97,7 +101,7 @@ Play starts the game straight in the chosen level – no logos, no menus, no wor
 | Save slot | 1 – 3 | 3 | The save game used for lives and progress. The game also saves into it. |
 | Skip startup logos | on / off | on | Also skips the logo movies and the title screen. |
 | Escape quits the game | on / off | off | Escape ends the game at once instead of opening the pause menu. |
-| Player start | text | (empty) | Leave empty for the level's own start. Advanced: "x, y, z[, angle]" in cells moves the start. |
+| Player start | text | (empty) | Leave empty for the level's own start. Advanced: "x, y, z[, angle]" in cells moves the start; "… @ world/chapter" uses it only in that level. |
 
 #### Intro skip