Panel Objects
-------------
Panel objects, as returned by `new_panel()' above, are windows with a
stacking order. There's always a window associated with a panel which
determines the content, while the panel methods are responsible for the
window's depth in the panel stack.
Panel objects have the following methods:
`above()'
Returns the panel above the current panel.
`below()'
Returns the panel below the current panel.
`bottom()'
Push the panel to the bottom of the stack.
`hidden()'
Returns true if the panel is hidden (not visible), false otherwise.
`hide()'
Hide the panel. This does not delete the object, it just makes the
window on screen invisible.
`move(y, x)'
Move the panel to the screen coordinates `(Y, X)'.
`replace(win)'
Change the window associated with the panel to the window WIN.
`set_userptr(obj)'
Set the panel's user pointer to OBJ. This is used to associate an
arbitrary piece of data with the panel, and can be any Python
object.
`show()'
Display the panel (which might have been hidden).
`top()'
Push panel to the top of the stack.
`userptr()'
Returns the user pointer for the panel. This might be any Python
object.
`window()'
Returns the window object associated with the panel.