7 uses of BLOCK_REGION_NONE

block_admin_configure in drupal/modules/block/block.admin.inc
Form constructor for the block configuration form.
block_admin_display_form in drupal/modules/block/block.admin.inc
Form constructor for the main block administration form.
block_admin_display_form_submit in drupal/modules/block/block.admin.inc
Form submission handler for block_admin_display_form().
dashboard_block_info_alter in drupal/modules/dashboard/dashboard.module
Implements hook_block_info_alter().
template_preprocess_block_admin_display_form in drupal/modules/block/block.admin.inc
Processes variables for block-admin-display-form.tpl.php.
_block_compare in drupal/modules/block/block.admin.inc
Sorts active blocks by region, then by weight; sorts inactive blocks by name.
_block_rehash in drupal/modules/block/block.module
Updates the 'block' DB table with the blocks currently exported by modules.