KSpaceDuel has a default set of keys to control the game. For a list of default keys see the section entitled Default Shortcuts.
Keys can be configured by selecting → from the menubar.
This will bring up a dialog box which lets you configure all hotkeys, including the keys used for steering the space ships, for firing bullets, and for laying mines.
You can see that each player (Red and Blue), has 5 keystrokes corresponding to Rotate Left, Rotate Right, Accelerate, Shot, and Mines.
When you are finished configuring your keys, you should click on to apply your changes.
If you want to restore the default keys, simply click on the button once. To make these changes permanent, press .
If you want to abandon the changes you made, and return to your previously selected keys, simply click , and your changes will be lost.