Expandable/collapsible lists

[Mikey]

Eric, et al,
Since I haven't found anything on List Behavior or its children yet,
does anybody have a good explanation of what each of these does?


-- 
On the first day, God created the heavens and the Earth
On the second day, God created the oceans.
On the third day, God put the animals on hold for a few hours,
   and did a little diving.
And God said, "This is good."