i lost... I HATE THIS ****ing DORRS the close botton closes the doors (he give a litlle fuel), if there is something unusal, it will kill me if you leave the door open too long (the picture is a picture of room if the romm isn't unusal) (some abnormal thing doesn't kill you but it's rare) the "nothing unusal" botton gives 25 fuel (little by little) if the door is open and if there is something abnormal and well you have lost if u use the speed bouton , u lost 25 fuel but u are most speed (and u use less fuel) if you use the fuel button, you get 10 fuel, you can reuse it when the 1st number on the floor changes
thanks for @salamignon , @EMMANUEL470 for some carachter and thank you so much @salamignon for writing a comment which gave me the concept