8 uses of BLOCK_REGION_NONE

block_admin_configure in drupal/core/modules/block/block.admin.inc
Form constructor for the block configuration form.
block_admin_display_form in drupal/core/modules/block/block.admin.inc
Form constructor for the main block administration form.
block_admin_display_form_submit in drupal/core/modules/block/block.admin.inc
Form submission handler for block_admin_display_form().
ForumBlockTest::testActiveForumTopicsBlock in drupal/core/modules/forum/lib/Drupal/forum/Tests/ForumBlockTest.php
ForumBlockTest::testNewForumTopicsBlock in drupal/core/modules/forum/lib/Drupal/forum/Tests/ForumBlockTest.php
Tests disabling and re-enabling the Forum module.
template_preprocess_block_admin_display_form in drupal/core/modules/block/block.admin.inc
Processes variables for block-admin-display-form.tpl.php.
_block_compare in drupal/core/modules/block/block.admin.inc
Sorts active blocks by region, then by weight; sorts inactive blocks by name.
_block_rehash in drupal/core/modules/block/block.module
Updates the 'block' DB table with the blocks currently exported by modules.