11. How to position in extra horizontal space 12. The minimum horizontal width of the progress bar 13. Whether the label widget should fill all available horizontal space 14. Remark how they have the same broad forehead, the horizontal eyebrows, 15. Options specifying the horizontal behaviour of the child 16. Minimum horizontal height of the progress bar 17. Toggle vertical and horizontal image flip buttons. 18. Whether widget wants more horizontal space 19. Default horizontal alignment for the actors inside the layout manager 20. The horizontal alignment, from 0 (left) to 1 (right). Reversed for RTL layouts.
