* The Script
object represents the instance of the script
* currently executed by the Cocoon Flow Layer.
*
* When a Cocoon sitemap contains an entry like <map:call
* function="myFunction"/>
, the flow engine will invoke the
* myFunction
function in a user-defined subclass of this
* interface.
*
* For example, using the JavaScript flow, attributes and operations of
* this instance can be retrieved, set or called prefixing them with the
* keyword this.
, or without any prefix, as in JavaScript
* the current script defines also Global attributes and operations.
*