SizeHints is a convenience class for parsing the WM_NORMAL_HINTS property (as defined in the icccm)
The tuple of allowed property values.
('flags', 'x', 'y', 'width', 'height', 'min_width',
'min_height', 'max_width', 'max_height', 'width_inc',
'height_inc', 'min_aspect_num', 'min_aspect_den',
'max_aspect_num', 'max_aspect_den', 'base_width',
'base_height', 'win_gravity')