Click anywhere and drag to control your jump direction and strength, then release to jump. You can jump multiple times in the air while you've still got fuel. Your fuel (blue bar) is depleted by each jump, and recharges when you land on solid ground. Your hull strength (red bar) is depleted when you impact a surface too quickly, so be careful. 'P' pauses, 'R' restarts a zone, and 'Q' quits to the main menu.