I just downloaded the game and started playing for the first time. I see that "The library is empty, why don't you create something." Sure, let me try typing create. I get:

The create action requires more information. For more details on how to create, type "learn to undefined".

Hmm, that's strange. Let me try learn to undefined.

Unknown action 'undefined'.

So I guess that's a bug? :(

You have to append another word to create", like "create a teapot". But yea, learn to 'undefined' thing is a bug :). We'll fix that.