Charset to use for output.
An array of name => value pairs which configure how this widget behaves.
The name of this widget. This is used as the basename for variables we access and manipulate.
Parameters which change this renderer's behavior.
Any variables that should be preserved in all of the widget's links.
Holds the name of a callback function to call on any URLS before they are used/returned. If an array, it is taken as an object/method name, if a string, it is taken as a php function.
A reference to a Variables:: object this widget will use and manipulate.