Keyboard shortcuts

Shortcut	Action
Ctrl+Z / Ctrl+Shift+Z	Undo / Redo
Ctrl+C / Ctrl+V	Copy / Paste
Ctrl+D	Duplicate
Ctrl+G / Ctrl+Shift+G	Group / Ungroup
Ctrl+S / Ctrl+O / Ctrl+P	Save / Open / Print
Del / Backspace	Delete selection
Shift while dragging	Axis lock (horizontal/vertical only)
Shift while scaling	Snap to grid
Shift + click	Extend selection
Ctrl+1…9 / 1…9	Save / load quick selection
0	Select all
L	Reselect last selection
Esc	Cancel (measurement, tool)