Expand/Collapse bullets or text under a Title

I would like to post an outline (List of Tasks, List of Details) under a Title, then select the "-" sign next to the title to collapse the view or the "+" sign to expand it. This would be most useful for Bulleted lists. It would also pemit much detail to be added to a topic for the interested reader - but hide it at the viewer's discretion. A pair of page-oriented buttons to Expand All or Collapse All would also be helpful.