Books
Other openglacier books, each a book of its own, published inside this site.
The sources live in the repository under og-books/manifest/: this book in src/, and each sub-book in a folder
of its own (the_ogml_language/) with its own book.toml. A sub-book is built into a sub-folder of this site
(the_ogml_language/) and shares its theme. og-books/manifest/tools/build.sh builds the whole site.