play-test copies are temporary (levels/.playtest, removed and mod selection restored when the game ends), add to llamamod and keep option in the editor, remove level and open levels folder in the launcher plus --remove-level, unique level mod ids for files differing only in case, esc leaves the waypoint tool

docs/manual/10-waypoints.md

@@ -83,6 +83,8 @@ that Ctrl+click therefore also inverts snapping).
 * **Backspace** (while the tool is active) or **Delete** / **Edit → Delete** removes the selected
   nodes and **relinks** the chain: the previous node now leads to the following one. The next
   node becomes selected, so you can delete several in a row.
+* **Esc** clears the waypoint selection; pressing it again (or **Q**) leaves the Waypoint tool
+  and returns to Select.
 * Moving the owner object with the Place tool moves the whole chain along (option
   *Move waypoints along*).