wordpress.org/reference/classes/wp_upgrader/download_package/) ` wp-admin/includes/class-wp-upgrader.php ` |  Downloads a package.   
[ WP_Upgrader::install_package() ](https://developer.wordpress.org/reference/classes/wp_upgrader/install_package/) ` wp-admin/includes/class-wp-upgrader.php ` |  Install a package.   
[ WP_Upgrader::run() ](https://developer.wordpress.org/reference/classes/wp_upgrader/run/) ` wp-admin/includes/class-wp-upgrader.php ` |  Runs an upgrade/installation.   
[ WP_MS_Users_List_Table::prepare_items() ](https://developer.wordpress.org/reference/classes/wp_ms_users_list_table/prepare_items/) ` wp-admin/includes/class-wp-ms-users-list-table.php ` |   
[ WP_MS_Users_List_Table::get_columns() ](https://developer.wordpress.org/reference/classes/wp_ms_users_list_table/get_columns/) ` wp-admin/includes/class-wp-ms-users-list-table.php ` |   
[ wp_prepare_themes_for_js() ](https://developer.wordpress.org/reference/functions/wp_prepare_themes_for_js/) ` wp-admin/includes/theme.php ` |  Prepares themes for JavaScript.   
[ WP_Screen::show_screen_options() ](https://developer.wordpress.org/reference/classes/wp_screen/show_screen_options/) ` wp-admin/includes/class-wp-screen.php ` |   
[ WP_Screen::render_screen_options() ](https://developer.wordpress.org/reference/classes/wp_screen/render_screen_options/) ` wp-admin/includes/class-wp-screen.php ` |  Renders the screen options tab.   
[ WP_Screen::render_per_page_options() ](https://developer.wordpress.org/reference/classes/wp_screen/render_per_page_options/) ` wp-admin/includes/class-wp-screen.php ` |  Renders the items per page option.   
[ themes_api() ](https://developer.wordpress.org/reference/functions/themes_api/) ` wp-admin/includes/theme.php ` |  Retrieves theme installer pages from the WordPress.org Themes API.   
[ WP_Screen::render_screen_meta() ](https://developer.wordpress.org/reference/classes/wp_screen/render_screen_meta/) ` wp-admin/includes/class-wp-screen.php ` |  Renders the screen’s help section.   
[ WP_Screen::get() ](https://developer.wordpress.org/reference/classes/wp_screen/get/) ` wp-admin/includes/class-wp-screen.php ` |  Fetches a screen object.   
[ WP_Plugins_List_Table::single_row() ](https://developer.wordpress.org/reference/classes/wp_plugins_list_table/single_row/) ` wp-admin/includes/class-wp-plugins-list-table.php ` |   
[ get_column_headers() ](https://developer.wordpress.org/reference/functions/get_column_headers/) ` wp-admin/includes/screen.php ` |  Get the column headers for a screen   
[ get_hidden_columns() ](https://developer.wordpress.org/reference/functions/get_hidden_columns/) ` wp-admin/includes/screen.php ` |  Get a list of hidden columns.   
[ get_hidden_meta_boxes() ](https://developer.wordpress.org/reference/functions/get_hidden_meta_boxes/) ` wp-admin/includes/screen.php ` |  Gets an array of IDs of hidden meta boxes.   
[ WP_Plugins_List_Table::prepare_items() ](https://developer.wordpress.org/reference/classes/wp_plugins_list_table/prepare_items/) ` wp-admin/includes/class-wp-plugins-list-table.php ` |   
[ export_wp() ](https://developer.wordpress.org/reference/functions/export_wp/) ` wp-admin/includes/export.php ` |  Generates the WXR export file for download.   
[ wp_create_thumbnail() ](https://developer.wordpress.org/reference/functions/wp_create_thumbnail/) ` wp-admin/includes/deprecated.php ` |  This was once used to create a thumbnail from an Image given a maximum side size.   
[ get_editable_authors() ](https://developer.wordpress.org/reference/functions/get_editable_authors/) ` wp-admin/includes/deprecated.php ` |  Gets author users who can edit posts.   
[ get_others_unpublished_posts() ](https://developer.wordpress.org/reference/functions/get_others_unpublished_posts/) ` wp-admin/includes/deprecated.php ` |  Retrieves editable posts from other users.   
[ Language_Pack_Upgrader_Skin::bulk_footer() ](https://developer.wordpress.org/reference/classes/language_pack_upgrader_skin/bulk_footer/) ` wp-admi