A friend of my wife is a teacher at AJ Charbonneau Public School (Grades k-8 in Canada) in Arnprior, ON. She brought her running club into Ottawa to participate in a 10km run there, not bad for students in grades 5-8. She remembered that I had done certifcates for a fun run we organize at our home and asked if I could make certificates for the club. I've seen how well certificates go over with these and personaly believe that this participation demands positive reinforcement, so I launched DRAW.
I realized I was printing to a laser printer that cannot print to the edge of the page. The outer black frame was therefore outside of the printable area. I selected the Layout tab and selected Fit to Page, the Preflight warning disappeared.