Advanced Hints
...
If you want to adjust the size of the button you can add height and width parameters--again to the text label. In the example above, if we wanted to resize the button as well as relocating it, we could modify it like this: "skip this question (t.7,l.7,w.2)". This would produce the same result as above except the label would be 20% of the screen width.
Finally, if you want to place the text label within the button itself, then simply put the text label in the button label field and leave the parameters in the text label field, like this: