book.routing.yml

book_menu in drupal/core/modules/book/book.module

Implements hook_menu().

book_render:
  pattern: '/book'
  defaults:
    _content: '\Drupal\book\Controller\BookController::bookRender'
  requirements:
    _permission: 'access content'

book_admin:
  pattern: '/admin/structure/book'
  defaults:
    _content: '\Drupal\book\Controller\BookController::adminOverview'
  requirements:
    _permission: 'administer book outlines'

book_settings:
  pattern: '/admin/structure/book/settings'
  defaults:
    _form: 'Drupal\book\BookSettingsForm'
  requirements:
    _permission: 'administer site configuration'