<https://forum.affinity.serif.com/index.php?/topic/64651-how-to-have-a-transparent-stroke/#comment-336326>
<http://schema.org/text>
"Vector export is problem, because this is a Serif specific function.\n \n"
<https://forum.affinity.serif.com/index.php?/topic/64651-how-to-have-a-transparent-stroke/#comment-335894>