Layers (sorry, lost the original header)

[Michael ROGERS <M Rogers cs ucl ac uk>]

>By default, the pager window is always on top.  Raising and lowering other 
>windows always leaves them behind the pager and leaves the pager visible.
>
>However, if you lower the pager, then it acts like just another window.  
>Lowering other windows will place them behind it (lowering all other windows 
>will end up with the pager on top), but raising another window will place it 
>in front of the pager.
>
>Raising the pager window resets it to "always on top" status.

This sounds like a good policy, but I don't think we need to mandate WM policy
in the spec (as Dominik pointed out, layers can be implemented internally by
the window manager).

Michael Rogers