http://www.freewarepalm.com/utilities/handoutline.shtml

handOutlibe 2.59 helps you build outlines with 11 levels of hierarchy.

It supports storing data on external memory cards -- including awareness of multiple memory card (useful if you have a RAM disk or a device that can mount more than one physical card.)

Outlines can be exported as a memo or to a memory card file with HTML tagging.