What is still unknown
The current evidence set does not establish exact keyboard shortcuts, controller bindings or undo limits.
Useful next step
Record the exact room, visible marker and game build. Use the Finder to compare confirmed visual fields, or export a correction report with the evidence you observed.
Using a recorded solution
Full routes in this companion begin from the cited room’s untouched starting state and name the initially selected hero. If you have already moved objects, compare the state first. Use the game’s displayed controls to return to the start; this page does not invent a keyboard shortcut or assume that re-entering a room resets it.