From reference: http://yui.github.com/yuidoc/syntax/index.html
"As shown in the example, you can also nest @param tags. This enables you to document object parameters that have their own particular nested structure."
@param {Object} [options] Data
to be mixed into the event
facade of the `change`
event(s) for these attributes.
@param {Boolean} [options.silent]
If `true`, no `change` event
will be fired.