> [gemhead]
> |
> [pix_(movie|film|image)] <-- reg_exp for human reading only
> |
> [pix_texture]
> |
> [gemhead] |
> | |
> [pix_texture]
> |
> [square]
I can't figure out what this diagram is showing. Why are there two gemheads and pix_textures? Does it work if the second gemhead and pix_texture objects are removed?