The trialduration for the given trial.
<likert> <openended> <slidertrial> <surveypage> <trial>
None.
The following displays the value of trialduration in a text stimulus:
<text sometext>
/ items= ("trialduration = <% trial.sometrial.trialduration %>")
</text>
The following displays the value of trialduration in an instruction page:
<page somepage>
trialduration = <% trial.sometrial.trialduration %>
</page>