These shortcuts work inside the replayer. The same list is available in-app from the keyboard shortcuts panel.
Playback
Space — Play / pause the replay
1 to 9 then Enter — Type a number to set the candle interval (for example 5 sets 5 min)
Drawing tools
Alt+T — Trend line
Alt+R — Ray
Alt+H — Horizontal line
Alt+F — Fibonacci
Alt+B — Long position
Alt+S — Short position
Alt+X — Text
M — Toggle magnet snap (snap to candle prices)
Editing drawings
Ctrl+Z — Undo
Ctrl+Shift+Z — Redo
Ctrl+D — Duplicate the selected drawing
Ctrl+C and Ctrl+V — Copy and paste drawings between sessions
Arrow keys — Nudge the selected drawing
Shift plus an arrow — Nudge 10 times faster
Screenshot
Ctrl+Alt+S — Save a screenshot
Ctrl+Shift+S — Copy screenshot to clipboard