Whether to show page numbers on a survey page.
<survey> <surveypage>
A value of 1 indicates the button will be shown, 0 indicates it will not.
The following displays the value of showpagenumbers in a text stimulus:
<text sometext>
/ items= ("showpagenumbers = <% surveypage.page3.showpagenumbers %>")
</text>
The following displays the value of showpagenumbers in an instruction page:
<page somepage>
showpagenumbers = <% survey.mysurvey.showpagenumbers %>
</page>