The following commands can be set from your keyboard. You can map each command to up to two different keys, either replacing the pre-existing default key, or keeping the default but adding a second key.
To remap your keyboard commands, click on Menu, then Options, then Keymapping. Click on the slot you wish to re-map (either the default, or the open slot) and press the key you wish to map to that command.
When you are finished, click on Apply Changes and Return to Game at the bottom of the Controls screen.
Only single-key commands are permitted, a command may not be mapped to a combination of keys, i.e., you can map a command to Alt or to C, but not to Alt+C.