PROBLEM STATEMENT:
Hi, I'm trying to find a 'datagrid' in banshee for testing ScrollPattern and its properties, and I find nothing, but that's not the point. I notice there is a 'Custom' control which contains a control like "scroll pane". the "scroll pane" contains a scroll bar and a group of panes. which I think the "scroll pane" is better to support ScrollPattern, if it's not, I can't imagine what's the relationship of the 'scroll bar' and the 'group' of panes

REPRODUCE:
1. Run banshee and UIA Explorer
2. Click "Edit" -> "Preference" -> "Extension" on banshee
3. Navigate to the control which under "Extension" tab item, and expand all of its children from UIA Explorer
4. Repeat these steps in Accerciser
5. Compare the "Custom" control on UIA Explorer and "scroll pane" in Accerciser

COMMENT:
Implement ScrollPattern for 'scroll pane' sounds like very reasonable, It reflect the relationship of the scroll bar and the group of panes, when you drag/click the scroll bar, so that those invisible panes can be displayed.

and otherwise, those ScrollPattern properties could not be found and tested. :)