The width of the slider or dropdown used by survey item.
<slider>
The value can be specified in percentages, pixels, or points.
The following displays the value of sliderwidth in a text stimulus:
<text sometext>
/ items= ("sliderwidth = <% slider.q1.sliderwidth %>")
</text>
The following displays the value of sliderwidth in an instruction page:
<page somepage>
sliderwidth = <% slider.q1.sliderwidth %>
</page>