Draw with Pen below text

[GM99]

How does one draw with the pen under the text layer of a PDF (to e.g. manually highlight text, draw a watermark, etc.)?

[Document Geek]

Not possible. Comments sit on top of everything else.

[GM99]

Well, at least a variation seems possible (https://forums.adobe.com/message/9802087#9802087​), but the "hold down Ctrl" trick doesn't work on my Mac, nor do any of the other key-combinations I've tried. Does anyone know why that is?

[Document Geek · Accepted solution]

My understanding of your question was that you are trying to draw under the text layer of a PDF. But from what I gather, you simply want an easier way to use the highlighter tool. This video may help: Acrobat DC Highlighter Tool - YouTube

Check out this feature request on the Acrobat User Voice site: Freehand Highlighter – Share your feedback on Acrobat DC

Please vote for it.