In LibreOffice Writer, how can I use a picture as a watermark?

In LibreOffice Writer, how can I use a picture (.bmp, .png, or .jpg) as a pastel, transparent watermark behind the text?

This is one way

Insert/Image

Change dropdown from Default to Watermark

Format/Wrap

Tick In Background

I wrote an article on the topic years ago: http://lodahl.blogspot.dk/2007/10/how-to-put-watermark-text-on-your.html