The value (0 to 255) of the green component of a text's background color.
The following displays the value of textbgcolorgreen in a text stimulus:
<text sometext>
/ items= ("textbgcolorgreen = <% text.bar.textbgcolorgreen %>")
</text>
The following displays the value of textbgcolorgreen in an instruction page:
<page somepage>
textbgcolorgreen = <% text.foo.textbgcolorgreen %>
</page>