Sep 21 21:14:57 <_bernie|home>  tomeu: (regarding backing store) I think enabling backing-store on sugar's window is too wast
eful, but maybe setting the "save-under" hint on the frame would be wise
Sep 21 21:15:30 <marcopg>       _bernie|home: what is save-under
Sep 21 21:16:11 <_bernie|home>  marcopg: gtk widgets are double buffered, yes, but only to reduce flicker on redraws.  I think the off-screen bitmaps are temporary for each repaint.
Sep 21 21:16:31 <_bernie|home>  marcopg: it's a wm hint for transient windows
Sep 21 21:16:37 <_bernie|home>  marcopg: such as menus
Sep 21 21:16:53 <_bernie|home>  marcopg: it causes the underlying contents to be saved before overwriting.