Commands are from the swedish keyboard layout.

Auto Indent: ctrl + I
Comment on mouse selects: apple + shift + 7 (/)

Kalle Persson came up with these tips in the comments.

Switching between. M and. H file: ctrl + cmd + arrow up
Force autocompletion: esc
Switching focus between the panels: cmd + j

Thanks to Kalle, if you want to tell about more great commands, add a comment.