Gets or sets the label of the back button.
<instruct> <surveypage>
This is useful for dynamically setting the label for the back button used in navigating survey and instruction pages.
The following displays the available memory mode:
<text sometext>
/ items= ("correct = <% instruct.backlabel %>")
</text>
The following displays the application mode in an instruction page:
<page somepage>
correct = <% instruct.backlabel %>
</page>