How to get to the treasure chest at level 1?

I must be stupid, I can't get around the rocks to get to the chest in level one. But somehow I managed to get to level 2...


I don't want to give away too much of the answer, so I'll just say that one of the characters in the maze gives a hint;

Vim-Adventure description of Vim "words".

and the keyboard key you need is available early in Level 3.

After you get it (and a small brown key), return to the treasure chest. enter image description here

That should get you on the right path. I love this game, so please post again if you need more clues.