begin include<br>
context: [[=include.context ]]<br>
from: [[=request.stack()[-2] ]]<br>
foo was [[=include.vars.foo]]<br>
setting foo to 'new value' [[include.vars.foo = 'new value']]<br>
returing 'retval'<br>
end include<br>
[[ return 'retval' ]]