debug wireframe: allowance areas option (off, floating spots, all edges) from an exact port of the engine floor test, capped by level memory

docs/manual/18-mods.md

@@ -124,6 +124,12 @@ A minigame on a TestLevel chapter: alligators come in waves into a walled pit. E
 | Coins per hit | 0 – 5 | 1 | Coins that pop out per hit (5 more at the end). |
 | TestLevel chapter | 32 – 49 | 49 | Chapter of world 9 the arena replaces (32–49; chapter 1 is the Test World's). |
 
+#### Jungle Day Chapter 2 (play-test)
+
+Temporary play-test copy from the level editor – removed when the play-test ends. Changes the original level t1l4m002.
+
+*Id* `playtest-jungle-day-chapter-2`
+
 #### Llama Coaster
 
 A roller coaster ride on a TestLevel chapter, with the cart from the Catacombs coaster levels: drops, climbs, boost arrows, a spin pad that turns the cart backwards and a jump over a gap. Steer left and right to stay on the track and collect coins; the ride ends at the station. Unlock TestLevel on the Save games tab.
@@ -144,12 +150,6 @@ Turns the hidden TestLevel (world 9, chapter 1) into a playground island: a gall
 
 *Id* `testworld`
 
-#### Village Chapter 1 (play-test)
-
-Temporary play-test copy from the level editor – removed when the play-test ends. Changes the original level t1l1m001.
-
-*Id* `playtest-village-chapter-1`
-
 ### Gameplay mods
 
 #### Boot to level
@@ -255,6 +255,10 @@ Shows what is normally invisible: the walls and floors the llama collides with (
 
 *Id* `debug-wireframe`
 
+| Option | Values | Default | Description |
+|---|---|---|---|
+| Allowance areas | Off, Floating spots, All edges | Off | Pink marks where the game still counts the llama as standing on a floor although it is just beside it (the collision test accepts a small margin outside every floor edge). Off: nothing extra. Floating spots: only the places where that margin reaches noticeably far, past sharp corners, and the llama would stand in the air above the real floor. All edges: a thin pink band along every floor edge, also where it does not matter. Off by default because it adds geometry to every level. |
+
 #### Free camera & noclip
 
 Press F7 to fly the camera freely around the level: arrow keys move, A/S turn, PgUp/PgDn look up and down, X/Z rise and sink, Shift or Space go faster. Press F9 for noclip: the llama flies through walls (arrow keys, X/Z up and down). Press the key again to switch off (the keys can be changed below).