Keyboard Shortcuts
Ctrl/Cmd + K : Open command palette
Ctrl/Cmd + S : Save workbook to cloud
Ctrl/Cmd + Shift + S : Toggle size panel
Ctrl/Cmd + Shift + / : Open shortcuts modal
Ctrl/Cmd + Alt + D : Toggle dark/light theme
Ctrl/Cmd + + / - / 0 : Zoom in / out / reset
Grid Keys
Arrow keys navigate cells, Enter starts/commits editing, Tab moves right, Escape cancels editing.