- backdrop_add_html_head_link in core/includes/ common.inc 
- Adds a LINK tag with a distinct 'rel' attribute to the page's HEAD.
- backdrop_get_html_head in core/includes/ common.inc 
- Retrieves output to be displayed in the HEAD tag of the HTML page.
- drupal_add_html_head in core/includes/ drupal.inc 
- Adds output to the HEAD tag of the HTML page.
- install_display_output in core/includes/ install.core.inc 
- Displays themed installer output and ends the page request.
- restore_progress_page in core/restore.php 
- Show a progress message while processing a restore.
- views_plugin_cache::cache_start in core/modules/ views/ plugins/ views_plugin_cache.inc 
- Start caching javascript, css and other out of band info.
- views_plugin_cache::gather_headers in core/modules/ views/ plugins/ views_plugin_cache.inc 
- Gather out of band data, compare it to what we started with and store the difference.
- views_plugin_cache::restore_headers in core/modules/ views/ plugins/ views_plugin_cache.inc 
- Restore out of band data saved to cache. Copied from Panels.
- _batch_progress_page in core/includes/ batch.inc 
- Outputs a batch processing page.
