Function: Escape single quotes, specialchar double quotes, and fix line endings.

Function: Escaping for HTML attributes.

Function: Register widget for sidebar with backward compatibility.

Function: Serves as an alias of wp_unregister_sidebar_widget().

Function: Registers widget control callback for customizing options.

Function: Alias of wp_unregister_widget_control().

Function: Register plural strings in POT file, but don’t translate them.

Function: Retrieve all autoload options, or all options if no autoloaded ones exist.

Function: Retrieve HTML content of attachment image with link.