cursor_shapes = {'arrow', 'circle', 'clock', 'cross', 'dotbox',
                 'exchange', 'fleur', 'heart', 'heart', 'man', 'mouse',
                 'pirate', 'plus', 'shuttle', 'sizing', 'spider', 'spraycan',
                 'star', 'target', 'tcross', 'trek', 'watch'}