The following shortcuts are available:

 

[Page Up]and [Page Down] Move Image Up or Down
[+] Zoom In
[-] Zoom Out
[0] Zoom Original
[C] Clone Active Rectangle Horizontally to the Right
[Ctrl+A] Select All Shapes
[Ctrl+T] Open Or Close the Toolkit
[Ctrl+V] Clone Active Docking Line
[Ctrl+Y] Redo
[Ctrl+Z] Undo
[Shift + C] Clone Active Rectangle Vertically Downwards
[Shift + U] Clone Active Rectangle Vertically Upwards
[Shift + B] Clone Active Rectangle Vertically to the Left
[Shift + H] Horizontal Alignment For Active Docking Line
[Shift + L] Show All Text Layers
[Shift + P] Show Or Hide Shape Rotation
[Shift + S] Show Or Hide Writing Mode
[Shift + R] Activate Or Deactivate Shape Rotation Mode
[Shift + V] Vertical Alignment For Active Docking Line
[Space + Mouse-Left] Move Image
[Tab] Transverse Between Selections