Hover AutoExpand: When the mouse hovers over a node for a period of time the node will expand to show its children
Auto Scroll on Select: Enables/Disabled horizontal auto scroll when an item is selected. If enabled the control will scroll horizontally until the caption is centered if it is too long for the current width of the control.
Show branch lines: Shows/Hides the dotted lines connecting the "+" symbols to a nodes child nodes.
Hottrack: Enabled/Disabled the node showing a selection color when the mouse passes over it
Full Row Select: If true selection anywhere in the horizontal area a node occupies becomes a hot area for selection. Otherwise only the caption and icon must be clicked to select the item.
Single Click Expand: If enabled when an item is clicked the node is expanded to show its child nodes, otherwise it must be doubled clicked or the "+" icons clicked to expand the node.
Group