mesh import fit ignores far-off stray pieces (with hint), project load warnings with readable names, edit projects of imported levelbuild wads load again (header runs applied to original values), -0.0 kept in saved arrays; start cameras checked in game on the test world and a village 2 base

docs/manual/07-meshes.md

@@ -40,7 +40,7 @@ cells.
 |---|---|
 | **Up axis** | **Y up (glTF, most OBJ)** or **Z up (some CAD exports)** |
 | **Unit scale (file units → cells)** | how many cells one unit of the file is |
-| **Largest side** … **cells** + **Fit** | sets the unit scale so the largest side becomes this many cells (default 4) |
+| **Largest side** … **cells** + **Fit** | sets the unit scale so the largest side of the main part becomes this many cells (default 4); far-off stray pieces are left out, and a hint below says so |
 | **Turn** | 0°, 90°, 180° or 270° about the vertical axis |
 | **Mirror (left ↔ right)** | mirrors the model |