- `books/`

: This folder contains the three raytracing books (in HTML), and some supporting material.

- `images/`

: Contains all of the images and figures of the books. Can also be used to compare your results.

- `style/`

: Contains the css for the books and the site.

- `src/`

: Contains the source.

- `src/common/`

: Contains any headers that are common to two or more books. This is also where external headers are

stored.

- `src/<book>/`

: Contains the source specific to any one book. There is no sharing of source outside of the

common directory.