Skip opponent's turn:
Press [Ctrl] + F When it is your opponents turn to move to skip back to your turn.
Duplicate items:
Press [Alt] + S to quick save the game while in your sector. Take an item from the speed inventory bar at the bottom of the screen and keep it "floating". Press [Alt] + R to restore the game. The selected item should still be in-hand as well as in the inventory. Place the "floating" item into an open location in the inventory to obtain two of the same item.
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