This argument is omitted then the command raises #&lt;widget> so that it is above all of its siblings in the stacking order (it will not be obscured by any siblings and will obscure any siblings that overlap it).
        <p>If aboveThis is specified then it must be the path name of a window that is either a sibling of #&lt;widget> or the descendant of a sibling of #&lt;widget>. In this case the raise command will insert #&lt;widget> into the stacking order just above aboveThis (or the ancestor of aboveThis 