Duceland Designer is very convenience to operating.
1. Press [Home]/[End] Keys to move canvas left/right, [Page up]/[Page down] to move canvas up/down.
2. [Up]/[Down] to precisely move canvas up/down, [Left]/[Right] to precisely move canvas left/right.
3. Mouse wheel can scroll canvas up/down. Mouse wheel and [Shift] scroll can move canvas left/right.
4. Press [F3] to free move canvas.
5. [F5] to execute xUML step by step.
6. [Shift] to move element, it will horizontal or vertical move.
7. Drag retanble to multi select.
8. [Shift] and click element to multi select.
9. Creative alignment: