4 calls to update_task_list()

update_check_requirements in ./update.php
Checks update requirements and reports errors and (optionally) warnings.
update_info_page in ./update.php
Provides an overview of the Drupal database update.
update_results_page in ./update.php
Displays results of the update script with any accompanying errors.
update_selection_page in ./update.php
Renders a form with a list of available database updates.

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