Ctrl + Z or Cmd + Z Undo Last Action
Ctrl + Y or Cmd + Y Redo Action
Del or Backspace Delete Selected Element
Esc Deselect Element
↑ ↓ ← → Nudge Element (1px)
Shift + Arrows Nudge Element (10px)
Ctrl + D or Cmd + D Duplicate Element
Ctrl + C / V Copy & Paste Selected Element
Double-Click Text Direct Text Editing