3 calls to bootstrap_invoke_all()

drupal_language_initialize in includes/bootstrap.inc: Initializes all the defined language types.
_drupal_bootstrap_page_cache in includes/bootstrap.inc: Attempts to serve a page from the cache.
_drupal_bootstrap_page_header in includes/bootstrap.inc: Invokes hook_boot(), initializes locking system, and sends HTTP headers.

Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.