Function: Retrieve default registered sidebars list.

Function: Converts the widget settings from single to multi-widget format.

Function: Output an arbitrary widget as a template tag.

Function: Retrieves the widget ID base value.

Function: Handle sidebars config after theme change

Function: Validates and remaps any “orphaned” widgets to wp_inactive_widgets sidebar, and saves the widget settings. This has to run at least on each theme change.

Function: Compares a list of sidebars with their widgets against an allowed list.

Function: Display the RSS entries in a list.