Etoys Project for Meta

I didn't Croquet yesterday, but I developed a project for the idea of meta with Abe-san for next workshop in Hokkaido. What's meta? It is one of the most important ideas of cs. To show the idea, I made a project that objects dance along with scenario showed as arrow symbols in a play field. In this project, the morphs of arrow symbols are considered as programming commands. The point is I could implement a simple programming language using etoys. According to Abe-san, etoys lacks still minor ability for making meta. In instance, we can get first object as first submorph (as car), but we can not get rest objects (as cdr). If we could use such whole list operation, etoys would get more flexible power.