Paper printout lacks white rectangles visible on screen

CivGuy2009

New Here ,

I've been adjusting PDF images of book pages by adding red text in the margins and using opaque white rectangles to cover distracting paragraphs or photos. Everything looks fine on the screen, with the areas covered by white rectangles appearing blank, as intended. But when I print the PDF on paper, the added red text is all there, but the opaque white rectanges are no longer present, leaving the distracting PDF text in place. What am I doing wrong?

TOPICS

Edit and convert PDFs , Print and prepress