4 * Default theme implementation for rendering book outlines within a block.
6 * This template is used only when the block is configured to "show block on all
7 * pages", which presents multiple independent books on all pages.
10 * - book_menus: Book outlines.
11 * - id: The parent book ID.
12 * - title: The parent book title.
13 * - menu: The top-level book links.
15 * @see template_preprocess_book_all_books_block()
20 {% for book in book_menus %}
21 <nav role="navigation" aria-label="{% trans %}Book outline for {{ book.title }}{% endtrans %}">