TAdvPanel and Group docs and questions

1. Where do I find the docs for TAdvPanel and TAdvPanelGroup?

2. As the user resizes a panel, how do I get the panels below to reposition live, so that the user doesn't think that resize will cause the panel to overlap the other panels? Or alternatively, show the resizing edge like a splitter, which would cut down on repaint and avoid misleading overlap.

3. Absent docs, how do I reduce the flicker during either resize of a TAdvPanel, or of the enclosing Form? I tried turning on DoubleBuffering on the panel, the group and the form, but I didn't see an improvement.

4. On TAdvPanel, how to I stop the bottom left grab triangle from showing that the panel will change width, when actually only the height will change?