Often when one needs to give handouts, there is a need for adding a watermark across the page, to prevent the students from copying the copy-righted material and from using it in their own presentations, or uploading it to the net without permisson.
The current watermark arrangement is not really functional. One should be able to set the angle - is it straight line, or across the slide. Set the colour, font and transparency. And the watermark should also appear in the handout notes of different formats, always across the slide, not across the page.