Whether a video stimulus should automatically loop back when a video is complete.
A value of 1 indicates the data are encrypted, 0 indicates data are saved in plain text.
The following displays the value of loop in a text stimulus:
<text sometext>
/ items= ("loop = <% video.foo.loop %>")
</text>
The following displays the value of loop in an instruction page:
<page somepage>
loop = <% video.crimes.loop %>
</page>