drawLineThrough accepts a boolean. If set to true, each node will have a connector line drawn through it.
A string can be entered under HTMLclass. That class will be given to each node in the cart along with the default .node class.
If you are planning of making a lot of <a> nodes then here is the possibility to assign target="_blank" to each of those nodes in one blow.
A collapsable option enables the node to interactively collapse its children. A collapse switch is added to the node. (jQuery required)