Spirit Rover

Umbes

Send instructions to Spirit – a lonely rover stranded on Mars. A game created in three days for the xkcd game jam. Inspired by this comic. If playing in browser, you'll need to click on game window to focus for input. Note that you need to type 'help', or 'h', to close the initial help menu. Here are some solutions (by me and other players). Can you do it with fewer commands/in less time?