The label for each response increment on a slider survey item.
<slider>
This is a collection property.
The following displays the value of label in a text stimulus:
<text sometext>
/ items= ("label = <% slider.q1.label.1 %>")
</text>
The following displays the value of label in an instruction page:
<page somepage>
label = <% slider.q1.label.1 %>
</page>